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October 2015
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Thursday, 1 October 2015 Dereel Images for 1 October 2015
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Cleaning up after the clinic
Topic: photography Link here

The horse clinic is over, my book review has been finally submitted, and suddenly there's nothing left to do except to process the photos that Yvonne took. Despite our expectations, she didn't quite make 2,000 of them—only 1,816:

=== grog@eureka (/dev/pts/20) /Photos/yvonne 182 -> ls -l 2015092[5-9]*/orig/*[VF] 20150930/orig/*[VF]|wc -l
    1816

I don't think I have ever taken that many in such a short space of time. In addition, many were videos, so the total space was considerably more than 50 GB:

=== grog@eureka (/dev/pts/20) /Photos/yvonne 180 -> du -scm 2015092[5-9]*/orig 20150930/orig
3948    20150926/orig
7782    20150927/orig
12703   20150928/orig
16205   20150929/orig
13926   20150930/orig
54561   total

That includes processed photos; it was “only” 41,184 MB of raw camera data.


Yet Another New Disk
Topic: technology Link here

The new disk for lagoon arrived today. I suppose it's a sign of the times that a 1 TB disk is now pretty much the lower size limit, and this one was only half the thickness of the one it replaced.

What partitions? I've been recommending a two file system approach since the first edition of “Installing and Running FreeBSD” in nearly 20 years ago. In 2003, I changed from / and /usr to / and /home, implicitly leaving /usr in the root file system. That makes a lot of sense: despite the name, /usr now contains mainly system files, while user files are in /home. That makes it easier to upgrade: the /home file system stays the same, and when you upgrade there's little you need to carry over to the new root file system.

But how big? In 2003 I recommended a root file system of 4 to 6 GB. Over the years I've increased that size considerably. Soon it was 10 GB, and on eureka and teevee it was 20 GB. On stable I raised it to 40 GB, and I did the same for the latest iteration of lagoon.

Strangely, things still fill up. Here a comparison of the machines, basically df output:

System       Installed       Filesystem       1048576-blocks       Used       Avail       Capacity       Mounted on
eureka       7 October 2008       /dev/ada0s1a       19,832       17,017       1,228       93%       /
teevee       17 May 2013       /dev/ada0p4       19,832       9,591       8,654       53%       /
stable       2013       /dev/ada0p2       39,662       32,215       4,274       88%       /

Where did all the space go? /usr/local can get enormous. eureka has over 9 GB, more than half the total file system. stable has over 10 GB. The reason that its root file system is so much bigger than on eureka is because of system builds: /usr/obj is now also nearly 10 GB in size.

So what do I do on lagoon? It was also 40 GB in size, and 30 GB of that was in use. But we have so much space—Yvonne only uses about 20 GB. So for the fun of it I created a 100 GB root file system. I now have:

Filesystem     1048576-blocks    Used   Avail Capacity  Mounted on
/dev/ada0p2             99176   30871   60370    34%    /
/dev/ada0p4             99176       0   91242     0%    /destdir
/dev/ada0p5            705709  154482  494770    24%    /home

/destdir is a second root file system for upgrades. The intention is to install a new version in that partition, then swap the partitions /dev/ada0p2 and /dev/ada0p4. That's why it's currently empty. And the usage in /home is mainly a backup of the Microsoft disk /dev/ada1 (dischord).


Friday, 2 October 2015 Dereel Images for 2 October 2015
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Automatic lens cap: almost
Topic: photography Link here

Yesterday's satisfaction with the new photographic stuff didn't last long. The new lens cap doesn't always open completely:


https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20151002/big/PM-2-and-auto-lens-cap-7.jpeg
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https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20151002/big/PM-2-and-auto-lens-cap-7-detail.jpeg
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The results are very visible:


https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20151002/big/Vignetted-photo-2.jpeg
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In passing, it's interesting to note how dependent the M.Zuiko digital ED 14-42mm f3.5-5.6 EZ is on postprocessing. At 14 mm it has impressive chromatic aberration and distortion. Here left the original image, right as processed by DxO Optics “Pro” with the standard conversion palette. Run the cursor over either image to compare with the partner:


https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20151002/big/Vignetted-photo-1.jpeg
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https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20151002/big/Vignetted-photo-2.jpeg
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https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20151002/big/Vignetted-photo-1-detail.jpeg
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I wonder if there's any free converter that can make sense of that level of distortion.


Returning the lens cap
Topic: technology, photography, opinion Link here

Clearly the new lens cap is useless. Time to initiate a return. To make it easier, it makes sense to send a couple of photos, roughly like the ones above. Fought my way through this emetic eBay form, climbed down the directory trees, and tried to upload the first image. No go:

 
https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20151002/big/eBay-message-1.png
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OK, try again, as they suggest.

 
https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20151002/big/eBay-message-2.png
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Well, a change of language helps, doesn't it? Additional retries alternated between English and German, and there was no way to break out of the loop. In the end I shut the tab and started again, this time with a smaller image (the original was full size). That worked. So it seems that eBay's way of saying “file too large” is to ask you, alternating between two languages, to retry for ever.


Flash problems without end
Topic: photography Link here

Somehow I can never get good results with on-camera flash. Today I tried taking the photos of the lens cap issue with my mecablitz 58 AF-2. Not good:


https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20151002/big/PM-2-and-auto-lens-cap-PM-2-and-auto-lens-cap-5.jpeg
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It's a known problem with this unit that you need to tilt the head down for close-up shots, but I had already done that. Sometimes I wonder what on-camera flash is good for.


Saturday, 3 October 2015 Dereel Images for 3 October 2015
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Comparing image converters
Topic: photography Link here

Yesterday's image comparisons showed that image conversion software has a lot to do with modern lenses. DxO Optics “Pro” does a good job, but it's not the only game in town. There's also Olympus' own Viewer 3, and once upon a time I had used UFraw. But there's other free stuff out there too. Went looking for Bibble, but that has gone away. There is, however, RawTherapee. Tried each of them, but didn't come to a conclusion. In the meantime I have:


Fixing the contact print processing
Topic: technology, photography Link here

One of the side effects of Yvonne's photo spree of the last few days is that my contact print scripts can't handle the sheer number of images. They're written as PHP web pages, and we were getting:

Request-URI Too Large
The requested URL's length exceeds the capacity limit for this server.

Took a look at the code, and discovered:

function docontacts ($desc, $dirdate, $imagelist)
{
  $method = "get";                              /* transfer method.  Set to get for debugging */
  global $me;                                   /* name of this script */
  ...

OK, that's easy enough. But there were a number of other annoying buglets, and I spent a lot of time trying to fix them, but didn't manage them all. It looks like I might need a restructure.


Mystery plant
Topic: gardening Link here

While walking the dogs a couple of days ago, Yvonne found this plant and took a cutting:


https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20151003/big/Flowers-3.jpeg
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https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20151003/big/Flowers-4.jpeg
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What is it?


Still more S-100 boards
Topic: technology, history Link here

While unpacking cartons, found a couple more S-100 memory boards. One is the fourth Econoram board, similar to the ones I had already photographed, but I'm surprised that I hadn't missed the other one last time round, in particular because of the modifications on it:


https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20151003/big/Expandoram-1.jpeg
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https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20151003/big/Expandoram-1-detail.jpeg
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What's that for? Do I still have the circuit diagrams somewhere? This is a 64 kB memory board, so it covers the entire address space of the Z80. My best bet is that I have carved a hole in the address space to allow inserting a PROM board.


Quadcopter
Topic: photography, technology, opinion Link here

A few weeks back ALDI had a “quadcopter” (a camera drone) on special offer. I bought one and had intended to test it, but either I'm incapable or it is. According to the packaging (an important part of the documentation; it's the only place where they mention the resolution of the camera) it comes with propeller guards:


https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20151003/big/Quadcopter-2.jpeg
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https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20151003/big/Quadcopter-2-detail.jpeg
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But they're not there (the replacement propellers are). It contains a tiny camera on the underside:


https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20151003/big/Quadcopter-3.jpeg
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https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20151003/big/Quadcopter-4.jpeg
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The remote control is one of the most amazing toys I've seen:


https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20151003/big/Quadcopter-5.jpeg
Image title: Quadcopter 5          Dimensions:          3050 x 3526, 2016 kB
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The buttons to the left and right of the screen are just fakes. The main switches are really old-fashioned slide switches between and below the joysticks.

I tried several times to use the thing. It's almost impossible, and it almost invariably landed on one of the propellers. The guards are really needed. It'll go back, but it makes me wonder if the more expensive devices are worth the trouble.


Sunday, 4 October 2015 Dereel Images for 4 October 2015
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Photo processing and Microsoft memory management
Topic: photography, technology Link here

More playing around with my PHP processing scripts today, and I think I have fixed all the bugs. Yvonne is still backed up to 26 September, and it looks like it will take her the rest of the week to process her thousands of photos and videos.

And of course she's complaining about DxO Optics “Pro” “Pushing the limits of your patience camera”. In the past I have noticed big differences in processing speed, and sure enough, it was slow today too. It looked as if there were lots of “hard” page faults (which I presume means causing disk I/O). That's not so surprising given the relatively small memory of the machine.

I was “logged in” too, if that's what you call sequential access to the machine. I had my own instance of DxO running, also Olympus Viewer 3 and a couple of other things. Since the login is frozen, they shouldn't make any difference: swap out to disk and wait for the next login.

But where did the memory usage come from? Logged out, and the 3.8 GB memory usage dropped to 2 GB. So although I wasn't active, and hadn't been for hours, “Windows” clogged up 1.5 GB of memory with the processes. Why? I don't know of any operating system that handles virtual memory that inefficiently.

Things still weren't good, though. So I tried the normal Microsoft trick: reboot. And how about that, after rebooting the system “only” used about 800 MB, and with DxO it was still only about 2 GB. It's hard to say how much the difference was due to Microsoft and how much due to memory leaks in DxO, but the result was a very significant increase in responsiveness.


Another FreeBSD VPS
Topic: technology, opinion Link here

While searching something completely unrelated, the following advertisement cropped up on my screen:

 
https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20151004/big/VPS.png
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As it says, it's from ARP Networks. The offer doesn't look bad, though nothing to entice me away from RootBSD, but it's nice to see other companies offering FreeBSD VPS.


Olympus in-camera focus stacking
Topic: photography Link here

Olympus has announced release 4.0 of the firmware for the OM-D E-M1, to be delivered in late November. It's by no means just cosmetic: it provides focus bracketing (multiple shots with slightly different focus settings), so that you can process them to a blended image, and focus stacking, which clearly means that the whole processing is done in-camera.

What a good idea! But the details look less exciting. In focus bracketing mode you can take up to 999 (clearly a round number) of shots in steps of “1” to “9”. What does that mean? 1 is the smallest step, 9 is the largest. This article gives some examples, but also shows that the steps are not directly related to the depth of field. Halfway down, near an image of a frog on a particularly green background, the author writes:

With the camera stabilised on a tripod, and the aperture set to f/5.6, I took 50 shots each at focus steps 1 and 2. Although 50 shots were not enough on focus step 1, 50 shots on step 2 proved sufficient for a beautiful composite photo.

The camera knows the focal length of the lens, and it can calculate the depth of field if it knows the exact distance. Does it? Even if it didn't, it could step until the image focus changes. Putting the settings in the hands of the user suggests that they don't quite have their act together yet.

In focus stacking mode, you take exactly 8 shots, merging them into a single image. What focus step? They don't say. At first it sounds like a very good idea, since the memory card will become the bottleneck. Unfortunately, you're limited to 8 images, and if you read the fine print you discover that 7% is cut off each corner for some reason, and it only works with three lenses. Fortunately, one is the m.Zuiko 12-40 mm f/2.8 “Pro” that I also have, which also looks like the best of the three for the purpose.

But are 8 images enough? In general, almost certainly “no”. One of the images on the page was put together from 150 shots. How long does it take to write all that to disk? A raw image is round 15 MB in size, so this is 2.25 GB of data. I don't know exact figures for the write speed of the E-M1, and I don't even have the fastest available SD Card (that will have to change), but I'd guess that you wouldn't get more than about 3 images per second, so a 150 image sequence would take about a minute. Why the limit of 8 images for focus stacking? My guess is the amount of memory available in the camera, so we won't see an improvement here until a new camera is released.

That's not all the new firmware offers, just the most exciting. Others of interest are “silent mode” using an electronic shutter (up to 1/16000 s). There are also a whole lot of other features, many for video, and some of which I don't really understand (“MF Clutch and Snapshot Focus Disable”, for example). Hopefully it will make more sense when it's installed.

And why the vapourware announcement? I suppose it's to make the cameras more attractive for the Christmas season. It also suggests that it'll be a while before we see a successor to the E-M1.


More mystery plants
Topic: gardening, opinion Link here

While walking the dogs this afternoon, came across no less than three plants that I can't identify. This one is the plant from which we took cuttings the other day:


https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20151004/big/Mystery-1-2.jpeg
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This one looks like it could be some kind of a creeping weed:


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And this is a bush with a tendency to creep. At first I thought it might be a Correa, but it's not quite typical:


https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20151004/big/Mystery-3-1.jpeg
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Took a cutting of that one; we'll see how it progresses.

The two Grevillea rosmarinifolia bushes that I've commented about before are still flowering noticeably differently. Clearly it's not a question of season:


https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20151004/big/Grevillea-rosmarinifolia.jpeg
Image title: Grevillea rosmarinifolia          Dimensions:          4625 x 3456, 7104 kB
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Monday, 5 October 2015 Dereel Images for 5 October 2015
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Olympus in-camera HDR revisited
Topic: photography, opinion, technology Link here

We've had a bit of a discussion on the German Olympus forum about the likely benefits of focus stacking on the Olympus OM-D E-M1. This was before I wrote yesterday's article on the subject. My concerns about the usability of the out-of-camera focus stacking were based on my experience with the out-of-camera HDR functionality of the camera, which was really not very useful. But then Martin Wieprecht came up with an example, apparently from his book „Die Große Reise ans andere Ende der Welt“, that really did look good:

http://www.oly-forum.com/files/images/pc162886a_c.jpg

So I tried again, looking through and out of my office. My light meter tells me that the exposure at the bottom, behind the desk, is EV 3.1. Outside the house, through the window, it's 13.0—a range of 10 EV. Not surprisingly, a normal photo shows almost no detail behind the desk, and outside is burnt out (first image). Putting it through DxO Optics “Pro”'s “Artistic HDR” profile improves things significantly (second image)


https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20151005/big/Normal-3.jpeg
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https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20151005/big/Normal-2.jpeg
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The in-camera HDR functionality shows a little improvement over an untweaked image, but HDR1 (first image) does not compensate as well as DxO's processing. HDR2 does marginally better, but the outside is only barely recognizable:


https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20151005/big/HDR-1-2.jpeg
Image title: HDR 1 2          Dimensions:          4608 x 3456, 1152 kB
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https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20151005/big/HDR-2-2.jpeg
Image title: HDR 2 2          Dimensions:          4608 x 3456, 1200 kB
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So why not process the HDR1 image with DxO? Because all you get is a JPEG image, and DxO wants raw images.

On the other hand, manually processing a 5 exposure bracket with 3 EV between the images does much better. The first photo was made from only the 0 EV, -3 EV and +3 EV images, while the second was made with all 5 (-6 EV, -3 EV, 0 EV, +3 EV, +6 EV). Now we have both detail in the shadows and also outside:


https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20151005/big/3-shot-2.jpeg
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https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20151005/big/5-shot-2.jpeg
Image title: 5 shot 2          Dimensions:          4622 x 3456, 1600 kB
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I'm still not happy with these last two. I suspect that I could get the outside to look better. But I can play with these images, and I might be able to improve it. With the in-camera HDR, what you get is all you have.

But Martin's images look good. What am I doing wrong? It looks as if the HDR functionality is deliberately very limited. But in that case, why does it need 4 images? I can get much better results with 3 images.


Microsoft logoff
Topic: technology, opinion Link here

We've established that putting a Microsoft login session on ice isn't enough to free up the memory, so I'm currently logging off. Microsoft doesn't make it easy:

 
https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20151005/big/Microsoft-logoff.gif
Image title: Microsoft logoff
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https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20151005/big/Microsoft-logoff-detail.gif
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It hangs there for something like 30 seconds. You'd think Microsoft's own products would behave.


Facebook: how can we best annoy you?
Topic: general, technology, opinion Link here

On one of my rare excursions into Facebook-land I was asked to participate in a survey. Opinionated as I am, I accepted. But all I got was a collection of postings, most as unrelated as these two:


https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20151005/big/Facebook-1.gif
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One's in Malay, though I can't understand enough to be sure of the topic: the Malays use a jargon that I can't decipher; neither can Google Translate. The other is in German about the cost of data retention. Do you prefer a fish or a bicycle?


Tuesday, 6 October 2015 Dereel Images for 6 October 2015
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Raw conversion revisited
Topic: photography, opinion, technology Link here

It's been over 4 years since I last compared raw image converters. I've learnt a lot since then, and on the whole I'm happy with DxO Optics “Pro”. But 3 days ago I had reason to examine things, and it took a while.

I have now read the documentation for RawTherapee. The first discovery was that it doesn't use lensfun, but instead profiles from Adobe Camera Raw, and you have to install them manually. In addition, the Adobe page states that only preliminary support is available for the Olympus OM-D E-M1, and newer models aren't mentioned at all. In general, the list looks about 2 years out of date. I didn't bother with this step. I was, however, able to use RawTherapee to convert images.

I now have output from DxO, both with my standard settings and without any correction at all, and also UFRaw, RawTherappe and Olympus Viewer 3, and unlike 4 years ago, I can now compare the output directly.

But how do you do a good comparison? I can compare each with its neighbour, or each with the uncorrected version, but that doesn't necessarily help. I've decided to go each with the uncorrected version first. Here goes. In sequence, they're converted by Viewer 3, DxO, UFRaw and RawTherapee. Run the cursor over an image to compare it with the uncorrected version, and click to enlarge.


https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20151002/big/Sample-image-Olyviewer.jpeg
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https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20151002/big/Sample-image-DxO.jpeg
Image title: Sample image DxO          Dimensions:          4608 x 3456, 2416 kB
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https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20151002/big/Sample-image-ufraw.jpeg
Image title: Sample image ufraw          Dimensions:          4708 x 3522, 1840 kB
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https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20151002/big/Sample-image-rawtherapee.jpeg
Image title: Sample image rawtherapee          Dimensions:          4632 x 3464, 1840 kB
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It's interesting to see how differently Olympus and DxO handle distortion, and it's also difficult to compare. Here's an alternation between the two, Viewer on the left and DxO on the right:


https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20151002/big/Sample-image-Olyviewer.jpeg
Image title: Sample image Olyviewer          Dimensions:          4608 x 3456, 1856 kB
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https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20151002/big/Sample-image-DxO.jpeg
Image title: Sample image DxO          Dimensions:          4608 x 3456, 2416 kB
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The difference in field of view is particularly noticeable.

UFRaw uses lensfun, but the results aren't very convincing (despite the pincushion framing of the resultant image). And RawTherapee manages to do some distortion correction although it says it can't. Here RawTherapee on the left, DxO on the right:


https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20151002/big/Sample-image-rawtherapee.jpeg
Image title: Sample image rawtherapee          Dimensions:          4632 x 3464, 1840 kB
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https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20151002/big/Sample-image-DxO.jpeg
Image title: Sample image DxO          Dimensions:          4608 x 3456, 2416 kB
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The results are very similar to DxO, though RawTherapee actually seems to correct more than DxO.

What does this do to the water tank on the left? Here are the details (uncorrected, Viewer, DxO, UFRaw, RawTherapee):

 
https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20151002/big/Sample-image-uncorrected-detail.jpeg
Image title: Sample image uncorrected detail
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https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20151002/big/Sample-image-Olyviewer-detail.jpeg
Image title: Sample image Olyviewer detail
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https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20151002/big/Sample-image-DxO-detail.jpeg
Image title: Sample image DxO detail
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https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20151002/big/Sample-image-ufraw-detail.jpeg
Image title: Sample image ufraw detail
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https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20151002/big/Sample-image-rawtherapee-detail.jpeg
Image title: Sample image rawtherapee detail
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Surprise, surprise: Olympus doesn't correct chromatic aberration correctly! Neither does UFRaw, though it's still better than Olympus. RawTherapee does. Here an excessively enlarged view of the up pipe:

 
https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20151002/big/Sample-image-uncorrected-detail-2.jpeg
Image title: Sample image uncorrected detail 2
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https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20151002/big/Sample-image-Olyviewer-detail-2.jpeg
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https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20151002/big/Sample-image-DxO-detail-2.jpeg
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https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20151002/big/Sample-image-ufraw-detail-2.jpeg
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https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20151002/big/Sample-image-rawtherapee-detail-2.jpeg
Image title: Sample image rawtherapee detail 2
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I'm particularly impressed by the results from RawTherapee. Yes, they're not as good as from DxO, but without lens profiles, that's not surprising. And I really can't understand why Olympus can't do better. Looking at the controls, it seems that it doesn't do automatic aberration correction:

 
https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20151003/big/Oly-Viewer-1.png
Image title: Oly Viewer 1
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Why not? I'm sure it happens in-camera. This makes Viewer even less desirable than I had thought it to be.

Apart from the chromatic aberration, most of the converters seem to misinterpret the shape of the tank: it looks like this (two more tanks of the same kind):


https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20151007/big/Tanks.jpeg
Image title: Tanks          Dimensions:          4608 x 3456, 2128 kB
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But there's a step in all the conversions except for RawTherapee. It's most obvious with Viewer, but it's there with UFRaw and even DxO.

The most interesting conclusion here is that RawTherapee is definitely worth a look. The results weren't as good as with DxO, but this was out of the box, and I really don't understand how it managed any lens correction at all, since I didn't download the modules.


Revisiting X configurations
Topic: technology, opinion Link here

One of the results of Yvonne photo orgy is an incredible amount of processing. I store the photos on disk on eureka, and Yvonne accesses them by NFS. That's not ideal: some things, like making contact prints of video clips, require a lot of I/O, and over the net it's particularly slow.

So why not log in oneureka? The simple answer is because my X configuration doesn't do it right. The fvwm2 menus look like this:

+ "eureka" Exec ssh -A eureka /usr/local/bin/xterm -name "xterm"  -bg BlanchedAlmond -s -sl 2048 -sb -ls -j -rw -display lagoon:0.0 -geometry 100x65+53+0 -fn 9x15 -e /usr/local/bin/bash &

That's an ssh started from the window manager, so it needs an ssh key to be loaded. Otherwise a particularly emetic bug in X causes the entire X session to hang.

OK, do what I do and load your ssh key before starting X. A quick change in the config files and all is well. In the process found this gem in .bashrc:

  # Not sure what good this is any more, but it can't harm, and it'll
  # help not to forget it.
  PATH=$PATH:/src/Samba/tivo/vplay/i386

How long has that been there? It clearly refers to hacks that tridge made round 15 years ago. It would have been on my TiVo, to which I last referred 11 years ago. blame tells me it came in in revision 1.26 on 23 May 2008, but I suspect that is just when I incorporated it from another file. One way or another, it's clearly long past its use-by date.

Somehow everything went wrong. After over an hour of frantic hacking of .bashrc and .xinitrc, got to the stage where xterm and some other programs could no longer open the X server. In the end gave up and installed eureka's config files on lagoon (they're supposed to be the same, and have conditional code dependent on the system) and rebooted. And it Just Worked. What did I do wrong?


Lens cap revisited
Topic: photography Link here

The return of my automatic lens cap has been agreed, though they want me to send it back (at their cost, admittedly). That cost is about 60% of what I paid for it. But what is the problem? One option would be dust. OK, how about an experiment: wash it. It's all plastic, so a bit of kitchen detergent shouldn't harm. Tried that and—it worked! Not only did it open completely, it did it with a click that had never been there before. That's good to know for two reasons: first, that the thing works after all, and secondly that if it gets dirty again, we can clean it.


Bushfire web sites, next iteration
Topic: general, opinion Link here

It's only a little over a month since Ballarat's coldest September night on record, but temperatures are now unseasonally high. We measured 31.8° today before a sudden cool change in the middle of the afternoon. And there were high winds—ideal bushfire weather. Time to look at the bushfire web site.

It would be wrong to say “no reaction”. The site redirected from http://osom.dse.vic.gov.au/ to a different URL on the same site, at least once. But then nothing for a long while, and then:

The connection to osom.dse.vic.gov.au was interrupted.
Error 101 (net::ERR_CONNECTION_RESET): The connection was reset.

What's wrong with the site? Going to the CFA web site gave me the chance to search a busy page for the map, which proved to be at http://warnings.cfa.vic.gov.au/#map. A new map, still hard to use, still needing multiple pages to display the information you're looking for. So of course there's no need for the old site any more. Nobody would have saved a link to it. It's not even worth removing the DNS entry: just leave it there to do nothing and time out.

And sure enough, we did have a bushfire, once again in the Ferrers Road area (or Ferrars Road, as the report put it). I'm glad we live on this side of the main road.


Wednesday, 7 October 2015 Dereel Images for 7 October 2015
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On with the garden?
Topic: gardening Link here

We really need to get the garden sorted out. But for that we need to get the sprinkler system installed, and for that we need to repair the underground piping that Brett Chiltern damaged months ago. I've given up trying to contact Brett, so Warrick Pitcher will have to come and do it, and I'll try to find Brett to serve the bill.

In the meantime, Gage from round the corner in Progress Road came along and did a bit of weeding and mulching. We really need to spray the weeds, but it's been far too windy lately.


A day's work wasted
Topic: technology, photography Link here

Yvonne has been working on her photo processing all week. Today she finished the work on the photos for 28 September, all 618 of them. Then she threw them away.

Why? Not deliberately, of course. It's a misfeature in one of my scripts. I use two scripts to make life more bearable with DxO Optics “Pro” and Microsoft. The first, fordxo, links the images I want to process into a static directory, /Photos/00-grog or /Photos/00-yvonne. When processing is done, I use another script to move those images back that haven't already been processed. Why 00-<name>? It gets displayed at the top of the directory tree, so it's easier to find.

But on this occasion I had already processed all images for Yvonne so that she only needed to process the ones that required special treatment. Normally fordxo checks if the image has already been processed, and if so doesn't link the source image to the 00 directory. And fromdxo doesn't copy any images that have already been processed. To override it, I added an -f option to the scripts,

All that works well. And as it happened, Yvonne reprocessed almost every image. Then she ran fromdxo without the -f flag, copied no images, and then moved on to the next day, overwriting the contents of 00-yvonne. What a pain! Fortunately, it looks as if a backup I did during the processing might have saved the day. And clearly I need to get fromdxo to count the images and complain if nothing gets copied.


Thursday, 8 October 2015 Dereel Images for 8 October 2015
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Eggs: so nice, so nice, we do it twice
Topic: food and drink Link here

A new box of eggs today bore a surprise:


https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20151008/big/Eggs-3.jpeg
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I've seen the occasional double-yolked egg, though not recently. But this is the first time ever that I have seen four of them in the one box.


Flaky software: don't do that, then
Topic: technology, photography, opinion Link here

Yvonne spent most of another day processing her photos from last week. In the process she managed to trip over many misfeatures of my processing system that I had never seen before. Some of it has to do with the change of user, but mainly with the change of approach. It brings home how important it is to get other people to test the software that you write. I blame it all on her German-layout keyboard, which I can barely use.


First mention of Dereel
Topic: history Link here

Our cleaning lady is looking for information about an ancestor called John Doyle—not exactly an uncommon name. She thought he had lived in Dereel in the 19th century, so I went off looking for web sites about Dereel. There's history.dereel.com.au, of course, but the Dereel Historical Society doesn't update it, and I could no longer find the other site that I had seen on Facebook. Is it gone, or is it just my “Facebook syndrome”? I can almost never find what I'm looking for.

But then I came back to Trove, the National Library of Australia's online database. It has grown since I last visited it, and now it has over 9,000 articles about Dereel. The oldest dates to 11 March 1804, long before the area round Dereel had been explored. It's also a false positive; the text doesn't occur there. Still, the article is interesting because it's the most recent document I have seen in English that still uses the long S (not Castle, but Caſtle).

The oldest document containing the text is dated 22 April 1815:

Government Ihntse, Sydney, Saturday, Gth April, 111 15 IS EXCELLENCY the GOVERNOR having deemed it expedient to erect SLAUGHTER HOUSE in COCKLE BAY, near to Dawes's Point, as well for the Convenience and Accommoda- tion of the Public as for the necessary Purposes of Government itself, He is pleased to order and di- rect, lliat in futuie all Animals, of whatever De- scription, ulrich may be intended fur the Go-ein ment Stores, shall be slaughtered at this Place; an«! the Storekeepers whose particular Duty it n:.tv he to receive Fiesh Meat on the Account of Go veinmeut, a;e ¡>l rielly 01 dereel and direct eel not to

What's that? Poor optical character recognition. Trove is full of it

But finally, on 19 January 1849, there's a report of a land lease, describing the boundaries entirely with text:

George and David Aitcheson
Name of run—Kuruck Kuruck
Estimated area—34,140 acres
Estimated grazing capability — 5,000 head of cattle or 15,000 sheep
Commencing at a point on the river Wardy Yallock 1 mile 72 chains north from crossing place over said river at the Frenchman's Inn ; and bounded on the south by a line bearing 285 ° 10 chains 90 links ; thence by a line bearing 273 ° 40 chains, thence by a line bearing 279 ° 2 miles 2 chains ; these last three lines dividing said run from that occupied by Messrs Williamson and Blow ; thence on the west by a line bearing 347 ° 52 chains dividing said run from that occupied by Messrs Williamson and Blow, thence by a line bearing 43 ° 1 mile 66 chains to the Wardy Yallock river, thence by a back water of the said river 21 chains 50 links, thence by a line bearing 47 ° 2 miles 51 chains, thence by a line bearing 1° 1 mile 36 chains ; these last three lines and back-water dividing said run from that of Glenfine occupied by Thos. Downie ; thence by a line bearing 96 ° 1 mile 47 chains to Kuruck Kuruck creek, thence by the said creek bearing from point to point 24 ° 30' 3 miles to the confluence of the Corindap Creek, thence by the said Corindap Creek, bearing 354 ° 4 miles 13 chains 50 links, the said Corindap Creek and Kuruck Kuruck Creek and last line dividing said run from that of Commeralghip occupied by Messrs M'Millan and Wilson ; thence on the north by a line bearing 91 ° 1 mile 60 chains to the White Hill gully, dividing said run from that of Dereel occupied by Messrs M'Millan and Wil- son ; thence on the west by the said White Hill gully, bearing 135 ° 30' 34 chains 50 links, thence by a gully bear- ing 227 ° 29 chains, thence by a line bearing 200 ° 70 chains, thence by a line bearing 132 ° 1 mile 39 chains to White Hill gully, thence by a line bear- ing 155 ° 30' 1 mile 1 chain to Kuruck Kuruck Creek, thence by a continuation of the same line 45 chains to the point of the stony rises, thence by a line bearing 195 ° 5 miles 19 chains, thence by a line bearing 145 ° 57 chains; these last six lines and gully dividing said run from that occupied by Compton Ferrars, thence by a continuation of the last line 39 chains, thence by a line bearing 236 ° 1 mile 60 chains, thence by a line bearing 216 ° 2 miles 60 chains ; these last three lines dividing said run from that occupied by Mr. James Austin, and thence on the south by a line bearing 282 ° 2 miles 42 chains, and thence by the river Wardy Yallock, bearing 2S2 ° 16 chains to the commencing point,

That's a genuine reference; names like Corindap (now Corindhap) and Wardy Yallock (now Woady Yaloak) clearly refer to the area. And it's much earlier than any other reference I have found (starting more like 1860). But how difficult it is to guess the boundaries of this run! Surprisingly, references like the Frenchman's Inn can still be followed: it was in Cressy, and only closed in 2008. And it seems that at the time of the document, the inn had been there for over 10 years.

There's much more there, including reports on the amount of gold dug in Dereel.


Friday, 9 October 2015 Dereel Images for 9 October 2015
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More Dereel history
Topic: history, opinion, technology Link here

Spent quite some time today looking through the National Library of Australia archive sites, and came up with more information about Dereel. I had already established that Dereel was already mentioned on 19 January 1849, but what was it at the time? A sheep run? It wasn't until a quarter of a century later that a publication in the State Library of Victoria State Government Gazette, whose web site appears to have been infiltrated by people who know better than the style guides. On “Friday, July 02nd 1875” the Town of Dereel was proclaimed. God save the Queen!

And back at the NLA there are 7 maps relating to Dereel. Only two are online, and one, dated 1925, is only available at minuscule scale. The other, however, is much more interesting. It was prepared by Ferdinand M. Krausé, and dates from 1889. It is guarded by a JavaScript application that gives you zoom and display sizes between 400×400 and 1200×1200. Fortunately, however, the map is out of copyright, and the Javascript communicates via the GET method, so it was relatively trivial to ask for http://www.nla.gov.au/apps/cdview/?pi=nla.map-rm2337-5-sd&rgn=&width=5120 and get an image 5120×5120:


https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20151009/big/Dereel-map.jpeg
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This map is amazing for a number of reasons. Firstly, the number of properties, which far exceeds the number there are today. And they bear little relationship to today's properties. About the only one I recognize is our old house at 47 Kleins Road. Here the map excerpt and a copy from the title:

 
https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20151009/big/Dereel-map-detail-3.jpeg
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The numbers along the edges show the compass direction and length in links (7.92"). Both are difficult to read, but I interpret:

Side       Length (Map)       Length (Title)       Direction (Map)       Direction (Title)
N       1197       1197       S 89° 51 E       90° 09'
E       951       951       S 0° 12 E       179° 48'
SW (1)       622       621       (?) N 29° 53 E       209° 53'
SW (2)       833       833       N 44° 49 E       224° 49'
S       299       299       S 88° 49 E       268° 49'
W       2091       2090       S 0° 8 E       359° 52'

The dimensions aren't quite the same, but it took some analysis to understand the difference. The compass directions in the title only make sense if you start at top left and go round clockwise. Clearly 179° 48' in one direction is 0° 12' in the other direction. But the map uses a different convention: east or west of north or south, and starting from the north or west. Thus the northern and southern boundaries, which are almost parallel, are S 88° 51 E and S 88° 49 E on the map—clearly showing that they're off by 2'—but on the title they're 90° 09' and 359° 52'.

So in the end the only difference is 1 link (roughly 20 cm) in two dimensions. How did they arrive at this difference? It's unlikely they would have re-surveyed it; if they had, they would have taken account of magnetic deviation. As Google Maps show, and as I have discovered in the past, Kleins Road does not run 359° 52' to the south; it's more like 20°/200°, as I estimated nearly 4 years ago.

Looking at the names, J.J. Klein also owned the other side of the road, now subdivided into 4 blocks, and also the one down the end. No wonder it was called Kleins Road.

But things are missing here too: Dereel-Rokewood Junction Road now joins the two roads at the top of this extract. How did people get through in those days? There are a number of missing roads. And there are an amazing number of roads on the map for which there is now no evidence that they ever existed. Further north, where we now live, there was almost nothing—quite contrary to what we had been told:

 
https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20151009/big/Dereel-map-detail-5.jpeg
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The road to the east is now the main BallaratColac road, but that's about the only one that's easy to recognize. Here's what Google Maps makes of the same area today:

 
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Almost none of the roads correspond. About the only one is the section of road running north/south, now part of Harrisons Road. On the other hand, there are roads which have now completely disappeared, like the one coming from the south-east corner. Looking at the satellite image there's still some evidence of that road to the east of the bend in Harrisons Road.

Why did people change the roads so much? A road isn't an easy thing to build, and we're talking about a time frame of only 126 years. It's really puzzling.

Coming closer to home, this is the area round Stones Road:

 
https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20151009/big/Dereel-map-detail-4.jpeg
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The road north/south in the centre is Harrisons Road again; the east-west one is then Bliss Road (note that a J Bliss lived down Harrisons Road, in what is now a paddock), and the road on the east side of the school is Stones Road. Our house would be roughly south of the second i in Diggings.

Other things of interest is E Speary, in what is now Speary's Road, and the post office in J. Smith's property (now a sheep paddock). Somehow it's surprising to find a school and a post office in such a sparsely populated area. Possibly the area marked “Diggings” was really something like a shanty town.

Then there are the diggings. The crosses represent mine shafts, and as far as I can tell, they correspond well with the shafts we find today.

Looking further afield, to the west of Dereel it looked like this:


https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20151009/big/Dereel-map-detail-6.jpeg
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This area is almost completely uninhabited today.

It's also interesting that the names of the property owners are included in the map, but not the names of the roads. And there are surprisingly few surnames, including ones that we know from road names today, like Cahill, Judge and Farley. Somehow the map asks more questions than it answers.


Saturday, 10 October 2015 Dereel Images for 10 October 2015
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Dereel Spring fair
Topic: general Link here

Yvonne wanted to go to a garage sale this morning, conveniently set for the first day of the Dereel Spring Fair. I went with her with the intention of visiting the fair on the way home.

Surprisingly, we found a number of interesting things: an ironing board, a bedside lamp, a couple of Pastis glasses and a couple of apparently brand-new cookbooks—all for a total of $10! My guess is that the prices for all the items together wouldn't have been more than $300. And for that four people stay at home all weekend.

The fair was much as the Dereel fairs always are, a combination of sales stall, exhibition and random stuff:


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Yvonne had seen a quilt that Julie Donaghy had made, and had ordered one that she intends to use as a wall tapestry. Both were on display:


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This is Yvonne's.


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She prefers it to the other. My understanding is that it'll come home soon to be attacked by the animals.

After taking photos, one of the people watching me pointed out that I wasn't supposed to take photos without the artist's permission. So we asked Julie, and she gave the permission.


Garden in Kleins Road
Topic: gardening Link here

While our new garden struggles, the one in Kleins Road is getting by well without us. We dropped in on the way back to get some Clematis shoots which I hope to propagate. There's lots of stuff going on there, notably the Paulownia kawakamii and the Echium candicans:


https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20151010/big/Paulownia-kawakamii-1.jpeg
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We have planted a sucker of the Paulownia in Stones Road, but the dogs (we think) bit off most of the stem, and until a week or so ago we weren't sure that it had survived. But it seems it did, though it hardly looks comparable to the parent tree:


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And it looks as if we're going to end up buying a new Echium.

Yvonne also bewailed the loss of the somewhat misshapen oak tree that we left in Kleins Road:

But to my surprise, when we went walking with the dogs later, we found this in the driveway:


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That must be an oak. But where did it come from? Once we have irrigation, we'll transplant it.


Cookbooks: a solution in search of a problem
Topic: food and drink, opinion Link here

The cookbooks that we bought at the garage sale were both sort of Indian, and both, it proved, by the same author, Mridula Baljekar: The Food & Cooking of India and “150 Curries”, apparently too old to be worthy of mention on the web site. They're particularly English in outlook, and some of the recipes look downright strange, more Chinese than Indian, such as numerous applications of five spice powder.

It's almost as if I have discovered a parallel universe, but then a closer examination reveals that the five spices are panch phoron—not the only case where I've been confused by her terminology. In a completely unrelated part of the book (the general introduction), she confirms this, but spells the word “panchforon”. Other strange spellings include kariveppila karuvepillai (curry leaf; note that doubled letters are pronounced doubled).

Other details are also interesting. This map shows Madras (called Chennai since 1996) in the middle of Andhra Pradesh state. That's a strange place for the capital of Tamil Nadu:


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In any case, the books are nicely presented, well photographed, and for $1 each you can hardly go wrong.

Interestingly, one of the photos in the first book shows (from afar) the Vishvanatha temple at Khajuraho. But clearly close-ups like this one aren't appropriate in a cookbook:


https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/19670504/big/18-Khajuraho-5.jpeg
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The second book is not restricted to Indian cuisine. But it has a unique feature: a built-in stand so that it can stand up when in use:


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Isn't that a good idea? I suppose it is if you like your recipes standing up. But with a normal bench height that means you have to bend down to read it, whereas if it's flat on the surface you don't. In addition, the ring binding makes it particularly difficult to turn the pages:


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I expect that this kind of binding will soon wear out the pages. In general, it seems that this is a solution in search of a problem.


Sunday, 11 October 2015 Dereel Images for 11 October 2015
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More unknown plants
Topic: gardening Link here

Spring is here, and I'm still discovering new plants. Within 300 metres of the house I've found three different plants that I have only just identified. This one is almost certainly a Bossiaea prostrata:


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And this one is a Goodenia lanata:


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And this one? I can't identify it completely. It's almost certainly a species of Dillwynia:


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But which? I haven't seen any photos on the web where the flowers are so colourful. Possibly it's a Dillwynia sericea, but they could be redder.


Topic: food and drink, photography, opinion Link here

Decided to try out one of our new cookbooks this evening, and we settled on a prawn pillau (or is that pilau? that's how it's spelt in the book) from The Food & Cooking of India. In retrospect not a good idea; it's too similar to the paella that we cooked yesterday.

On the whole, not a bad dish, but once again I get the feeling that the dishes that the photographers get are not cooked to the same recipe. Here the photo from the book and our version:


https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20151011/big/pillau-recipe.gif
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But that seems to be normal for cookbooks.


Monday, 12 October 2015 Dereel Images for 12 October 2015
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Multilingual spam
Topic: technology, general, opinion Link here

I have connections with people round the world, and I've had the same email address for 18 years (before that my domain name was lemis.de, which didn't export well). So it's not surprising that I'm bombarded with spam. It probably doesn't help that I keep telling Facebook different things about my past. Currently I claim to have been born in Kandahar, studied at Новосибирский государственный университет (Novosibirsk State University), and to live in Харків (Kharkiv). So it's not that surprising that a lot of my spam is in Russian and Ukrainian. But that's only part of it:


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Click on the image to make it readable. Apart from Russian (I don't recognize any Ukrainian), I have Portuguese, Spanish, French, Greek, German, Chinese, Japanese, and at least one language written in Arabic script. And the German subject lines are either deliberately or accidentally written in broken German.

Isn't the net fun?


More Indian food
Topic: food and drink, opinion Link here

Yesterday's prawn pillau was quite a success, and though we were supposed to be eating the rest of the paella today, I decided to try another recipe from the new cookbooks. This time I tried the other, “150 curries”.

One thing is clear: the title is wrong. My guess is that not more than half of the recipes could be called curries. There are noodle dishes, nasi goreng, sambals and all sorts of other dishes. They don't look bad, but they're not curries.

The big issue is the ingredients, of course. In the end we drummed up 8 chicken drumsticks and made a murgh dopiaza, chicken with lots of onions:


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Once again, Yvonne was happy with the dish, though the timing in the recipe was clearly intended for chicken breast and not drumsticks.

After the meal, I went looking for other mentions of the dish—a good time to do so. And in Wikipedia I found:

As many other Hyderabadi dishes, the addition of a sour agent is a key part of dopiaza. Most often, raw mangoes are used; however, lemon juice or cranberries can be used as well.

There's nothing sour in the recipe, nor in any other recipe I found on a quick trawl through the web. Who's wrong?


Tuesday, 13 October 2015 Dereel Images for 13 October 2015
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More phone problems
Topic: technology, opinion Link here

CJ Ellis has trouble with his phone again! Once again he can make calls out, but calls in get automatically diverted to voice mail. He asked me for help. I confirmed the behaviour, and suggested that he got MyNetFone to contact me for problem resolution, since he has difficulty understanding the people. Sometimes I do too: they asked him what kind of modem he had. Modem? What's that in a National Broadband Network system? All he has is an ATA.

Sure enough, within minutes I got a call from Akbar of MyNetFone support, asking what the problem was with my phone (to which he referred as “landline”). I explained the situation, but it didn't seem to sink in. Round the second or third time it did, though. He checked CJ's configuration and found nothing wrong. That, at least, was different from last time, where their system claimed he wasn't registered, though he could make calls out.

So he tried another call, and said everything was OK: after a few rings it diverted to voice mail. What kind of confirmation is that? It all depends on what “a few rings” is. Tried it myself. Sure enough, it diverted after exactly 20 seconds, as configured. So the problem was no longer there. But how difficult it is to establish these things. They still haven't got the ring tones right, probably because they don't understand the problem.

And why does this always happen to CJ?


Kill that monkey!
Topic: animals Link here

After Saturday's garage sale, Yvonne decided that she would like to buy some dining chairs there. They were still there, three of them for $1 apiece, so she went off and picked them up. On the way she was given a dog toy, which Sasha really loved. So does Nikolai, who normally doesn't play with stuffed toys:


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Why this one? It's much bigger than most stuffed toys, and maybe that's the attraction. We're trying to decide whether it's supposed to represent a bear or a monkey.


Indoor greenhouse
Topic: gardening Link here

We made the conscious decision not to move the greenhouse here. It was more pain than it was worth. And we've now discovered that we have sufficient space in the dining room for a kind of winter garden:


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That has an additional aspect: when insects attack the plants, we find out about it, though not necessarily as fast as I would like. Today I found these insects on the hibiscus buds, though they looked more active before I gave them a dose of pyrethrum:


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What are they? Some kind of beetle, it would seem.


Micro four thirds and extension tubes
Topic: photography Link here

Taking the photos of the hibiscus buds was difficult. I really wanted to come closer, but past experience with the Zuiko Digital ED 50 mm F2.0 Macro suggests that it focuses too slowly for handheld shots with extension tubes. So what about the M.Zuiko 12-40 mm f/2.8 “Pro”? Put it on with the 11 mm extension tube and... I couldn't focus At All. In the end I had to take the photos without the tube.

Later I tried it under more controlled conditions. Yes, I could focus manually, but autofocus failed completely. It worked with the 50 mm lens, though. Is there something about the autofocus system that causes the problem? Do the original Olympus tubes do it better?


Wednesday, 14 October 2015 Dereel Images for 14 October 2015
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20 years of “The Complete FreeBSD”
Topic: technology Link here

20 years ago today I had a visit from Jack Velte and friends of Walnut Creek CDROM. After dinner we did a bit of quick hacking and came up with what was to become “The Complete FreeBSD”. The book went through 5 editions, but it's completely out of date now. How times have changed! And how many things haven't!


Mowing the lawn
Topic: gardening Link here

Warrick and Mari are coming on Friday to fix the damage that Brett Chiltern caused, involving trenches in the garden. The garden is a mess! And we're not really motivated to do anything about it until we have the water. But I could at least mow the lawn—I thought. Despite my misgivings, I had left the layout to Yvonne, and getting the ride-on mower between the plants is really difficult. A good thing we have a push mower and people prepared to push it.


Thursday, 15 October 2015 Dereel
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I blame it on Microsoft
Topic: technology, opinion Link here

Today I had to do something with despair, my Microsoft “Windows” 7 box. A popup: software updates installed, rebooting in 3 minutes.

Why that? I had explicitly told it not to install anything by itself. But now I had a problem. Yes, “remind me later” buys me time, but it seems not much. And currently I didn't have a display on despair, nor even a cable to connect it to the KVM.

Out into the shed to look for a cable. I really needed a second one for swamp, one of my test boxes. For some reason, I have hundreds of Ethernet cables, even AUI, but after much searching and reshuffling moving cartons, I only found one VGA cable.

Back into the office to hear the local UPS quietly buzzing to itself. Clearly it was running. Back into the shed to find that my box reshuffling had disconnected the output cable for the main UPS. Plugged it back in again... it went on battery. Into the garage. Yes, the input circuit breaker had tripped yet again. Thanks Jim. So far, since we've lived here, the UPS has been behind more problems than it has solved.

Back into the house to tidy up the resultant mess. Having eureka, my main box, on the second UPS has shown itself to be a good idea. But lagoon came up without network connectivity. So did stable. So did cvr2. So did even despair.

Clearly there was something wrong with eureka. But what? Switch? The switch wouldn't explain why stable, on the same switch, could access other machines. Restarted dhclient, which was definitely not doing its job, and natd for good measure. Nothing. Firewall config? A good choice. Re-initialized the firewall. Still nothing. Started a tcpdump to see if that could give me any insight. Yes, clearly an ICMP echo request from stable to eureka, and an ICMP echo reply from eureka to stable...

Wait a minute. It wasn't doing that 5 minutes earlier. Sure enough, everything was working normally again. What went wrong? It came good too much later than the firewall reinitialization for it to be that, but I still have no idea what it was. Looking at the firewall stats later, the only rejections I saw were:

00040     3678     204152 unreach filter-prohib tcp from not 192.109.197.0/24 to any setup

That wouldn't explain inability to ping.

I really must look at those UPS connections.


Porting again
Topic: technology Link here

Gradually I'm running out of excuses not to upgrade eureka to the latest and greatest FreeBSD. But there's still one: kgames, some card games that Keith Packard wrote decades ago. The code seems to have rotted, and I can't find any version that will build in a modern environment.

OK, that's a question of porting, and when it comes to porting, I wrote the book. But the kind of porting described there is almost as old as the code. Still, got off to a start.

First I need a Makefile. That's easy: run imake:

=== grog@eureka (/dev/pts/6) /home/ports/x11/kgames/kgames-1.0 264 -> imake
Imakefile.c:16: error: Imake.tmpl: No such file or directory
imake: Exit code 1.

Where's my Imake.tmpl? locate tells me that it's in /usr/local/lib/X11/config. OK, imake -I/usr/local/lib/X11/config did it. But why didn't the imake in /usr/local/bin know that?

Next: varargs is dead and gone, long live stdarg. How do you convert them? I haven't found a good set of instructions, but here are the diffs which I ended up with:

--- Xkw/Message.c       1996/03/13 15:46:31     1.1
+++ Xkw/Message.c       2015/10/15 02:25:26
@@ -30,7 +30,8 @@
 # include      <X11/Xaw/Cardinals.h>
 # include      "Cards.h"
 # include      <X11/Xutil.h>
-# include      <varargs.h>
+# include      <stdarg.h>
+# include      <stdio.h>

 char *
 CardsSuitName (s)
@@ -174,26 +175,21 @@
     XtSetValues (w, arg, 1);
 }

-MessageAppend (format, va_alist)
-    char    *format;
-    va_dcl
+MessageAppend (char *format, ...)
 {
     va_list args;

-    va_start (args);
+    va_start (args, format);
     append (format, args);
     va_end (args);
 }

-Message (w, format, va_alist)
-    Widget  w;
-    char    *format;
-    va_dcl
+Message (Widget w, char *format, ...)
 {
     va_list args;

     MessageStart ();
-    va_start (args);
+    va_start (args, format);
     append (format, args);
     va_end (args);
     MessageEnd (w);

That's at the “it compiles, ship it” stage.

Then there were a number of minor gripes, like using NULL for 0, or not casting function arguments. The next serious one was in kklondike/kklondike.c:

=== grog@eureka (/dev/pts/6) /home/ports/x11/kgames/kgames-1.0/kklondike 272 -> make
cc -O2 -pipe   -ansi -pedantic -Wno-system-headers -Dasm=__asm  -Wall -Wpointer-arith -Wundef   -I..  -I. -I./exports/include   -DCSRG_BASED  -DFUNCPROTO=15 -DNARROWPROTO     -c klondike.c
klondike.c:26:28: error: X11/Intrinsic.h: No such file or directory
klondike.c:27:29: error: X11/StringDefs.h: No such file or directory
(etc)

Why doesn't the Makefile include /usr/local/X11/include?

Round about here I have a decision to make: do I just fix it without the help of imake, or do I fix it so that imake still works? Does anybody use imake any more? I wanted to quote from Software Portability with imake, but I can no longer find the book. Maybe I did the right thing and threw it out. It's now 20 years old, and times have changed since then. I have a recollection of a biography including the statement that the authors had been so brain-damaged by contact with imake that they were only fit for travelling carnivals, but that doesn't sound like Paul DuBois for a couple of reasons. Maybe I was confusing it with a different book.


More bread experiments
Topic: food and drink, opinion Link here

A couple of weeks ago I made a mistake measuring the amount of flour for baking bread (too much), and ended up having to bake two partial loaves. That didn't work out as badly as I had feared, so when I started a new batch yesterday, I planned for two full-sized loaves: one in the newest pan, and one in the second-newest pan, which is only half the size.

The starter handled the 50% more flour well—too well, in fact: it overflowed the container. A considerable mess, a lot of calculation, but in the end things worked out well. Next time I'm going to have to create less intermediate starter and see if things still work out.


Friday, 16 October 2015 Dereel Images for 16 October 2015
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Repairing irrigation damage
Topic: Stones Road house Link here

Mari Hendriks and Warrick Pitcher along today to repair some of the damage that Brett Chiltern and mate did months back: the punctured underwater irrigation line.

But how was the stuff laid originally? At the time, nearly a year ago, I took lots of photos. Except, of course, the ones I needed. Still, Mari found it. They started in the corner near the dog run, and looking in that direction we found the white stormwater pipe on the left, the red control cable close to it, and the green-striped black irrigation line off to the right:


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Here's the view from the middle, with Mari at the other end:


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And 45 minutes later they were done:


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While they were there, got them to put some pipes under the driveway. This one is a drain for the ground water and also some low-density poly irrigation hose in a rural poly sleeve:


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And here the other irrigation line across the driveway, again with low-density poly in rural poly:


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In addition Mari added another tap for bore water near the bore pump. So finally we have water to water the garden. Spread a lot of it around.


More bones
Topic: animals Link here

Letting Mari on to the property didn't go as smoothly as hoped. Nikolai and Leonid were in the front garden, and when I opened the gate, they shot off down Grassy Gully Road. Niko didn't have a collar, so I went inside to get one, and then headed off looking for them. It didn't take long before they came running back, Niko with something in his mouth:


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He sat down to chew on it, and I retrieved it long enough to examine it:


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Clearly a sheep head. A good thing it's so old that he can't possibly have killed it himself.


Saturday, 17 October 2015 Dereel → Ballarat → Dereel Images for 17 October 2015
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Dog training again
Topic: animals Link here

Into town with Yvonne and Sasha this morning. Sasha is doing “puppy training”, the way we did with Tanya and Leonid and with Nemo before that. For some reason Leonid missed out.

Things have changed since then, and today there was only one other dog there, about the size of Sasha's head. I didn't take any photos, only videos, and I've left it to Yvonne to process them.


Another new lens
Topic: photography Link here

Yesterday I won a Olympus Zuiko Digital 35mm F3.5 Macro lens on eBay.

What do I need that for? I already have a Zuiko Digital ED 50 mm F2.0 Macro, a better lens. But its focal length is frequently a problem, and it has a maximum magnification of 1:2 (area 37.6×26.0 mm), while the 35 mm macro has a maximum magnification of 1:1 (area 17.3×13.0 mm). Even with both extension tubes, I can't get that ratio with the 50 mm lens. Both make it convenient for a number of applications, including taking photos while walking the dogs.

Conveniently, the lens was located in Ballarat, so I was able to pick it up. The seller has an amazing amount of equipment. I thought I was a hoarder, but he has me beat. I counted at least 2 OM-D E-M1s, 2 OM-D E-M5s (I think), a E-PL7, and he also had two E-330s and an E-300, admittedly the latter four all for sale. He also had a Sigma 30 mm f/1.4 lens for sale, against which I had decided because it's not supported by DxO Optics “Pro”, but I took a look at it anyway. Yvonne's camera (the E-PM2) could hardly focus with it at all. Mine would have, but why buy something like that when there are lenses like the Leica DG Summilux 25 mm f/1.4 available?

Chris also had a M.Zuiko Digital ED 14-42mm f3.5-5.6 EZ with an original Olympus automatic lens cap. He's not happy with it: it's smaller, and it doesn't keep dust out of the mechanism. I'm not sure ours does either, but here's the comparison. The lens on (Yvonne's) camera has the aftermarket cap, and the other has the Olympus cap:


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Coincidentally that's also the first sensible photo I took with the new lens.


Spring: coming up roses
Topic: gardening Link here

It's the middle of spring, but looking at the garden you wouldn't know it. The recent hot spell and the relative lack of water mean that things aren't growing the way they should. As a result, there aren't many flowers.

One exception are the wildflowers that I had noticed last year, and which I have mainly been able to identify. This is without doubt a Burchardia umbellata:


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And this is a species of Drosera, now flowering:


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But there are still flowers that don't appear in my clever books:


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The other group of flowers that seem to be particularly happy are the roses, all of them transplanted just a few months ago.


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All of them also have a surprising number of buds.

The Dicksonia antarctica is also unfolding its fronds:


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And finally the somewhat mistreated Camellia japonica had produced its first, barely recognizable flower:


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That should be a lot better when we finally decide where to plant it.

And of course the Gazanias are surviving well, even after having been run over by Warrick's Kumatsu yesterday:


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Unexpected spam
Topic: general, technology, opinion Link here

Only a couple of days ago I commented on the number of languages in which I get spam. But today there was a new one:


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Indeed, I can't recall having received a message in Azerbaijani before. But this one wasn't one either: it an invoice from Citylink, the operator of Melbourne's tollways (which they call freeways, presumably because the term “road toll” has a completely different meaning here. Certainly they're anything but free).

 
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But Citylink enjoys games. Instead of just sending you your invoice, like every other company, they hide it on the web and get you to come and look for it. The whole thing takes multiple clicks on a very slow web site, with response times as long as 40 seconds, but then you can send a PDF formatted invoice to your email. Why don't they do it automatically?

So somehow it's funny that gmail gets confused by their messages. I wonder what makes them think it's Azerbaijani.


UPS irritation
Topic: technology Link here

I have two UPSs in series. The big one (3 kVA) is in the shed. It runs all the low-power stuff in the house, mainly electronics and lighting. It also feeds the small one (1 kVA), which is there only for eureka, my main machine. I have never got round to installing any monitoring software: if the power fails for any length of time, there's currently not much we can do about it.

Today, however, the second UPS was not feeling happy. On several occasions it beeped once and then stopped again. Why? Nothing else had any issues. The display went on, but it's on the floor, and by the time I looked down there was nothing to be seen. About the only thing of interest was that the input voltage was 245 V, relatively high. Could it be that the first UPS was doing something to keep its output voltage in range? Put a mirror in to be able to see it more quickly:


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But it didn't help much, since the problem went away again.


Filet mignon au bacon
Topic: food and drink Link here

We receive a daily newsletter from Cuisine et vins de France. They're usually not overly interesting, but a week or so ago we found one for filet mignon au bacon, which we tried today. Bacon is, of course, not a French ingredient. The filet was stuffed and then wrapped in the bacon:


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Maybe there could have been more stuffing:


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On the whole, though, it didn't turn out at all badly.


Sunday, 18 October 2015 Dereel Images for 18 October 2015
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Phone or camera?
Topic: photography, technology, opinion Link here

Juha (or is that Matti?) Kupiainen went for a motorbike ride today with his mate Glenn.

What does that have to do with me? He took some photos and published them—as a directory with the original images. To look at them, you need to select each image separately.

OK, this isn't Juha's fault: he can do it like that, which simply requires linking the directory into the web server, or he can put them on Flickr, like he did 8 years ago. But that requires lots of mouse-pushing, and you still don't have much control over the display format.

So for the fun of it I created a quick and dirty web page that would display all the images. But Juha wasn't happy: two of the images were still on their side (the way he took them), and it didn't display the EXIF data. For that they need to be local.

So I downloaded the images, and for good measure put them through DxO Optics “Pro” and Ashampoo Photo Optimizer. To my surprise, DxO knows the device (an iPhone 4S), and has optical corrections for it which show that, in fact, the lens isn't badly corrected. I can't see any chromatic aberration, and there's only minimal barrel distortion.

But the image quality! The normal size (“thumbnail”) images are OK:


https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20151018/big/Ride-with-Glenn-2.jpeg
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But this is an 8 MP sensor. And a selection from the sky (upper left in the image above) shows what things really look like:

 
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And the pixel depth? The images were JPEGs, of course, but I'm not sure they even made the 8 bits. This photo doesn't look too bad initially:


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But look inside the doorway. There's almost no detail at all. Here's what it looked like originally and after going through the “optimizer”:

 
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What are those marks? It could be rain, but one way or another it looks really terrible.

Somehow smart phones are the lowest common denominator of technology. Yes, they work, and 20 years ago they would have been science fiction. But nowadays I think people have forgotten that we can do much better.


Things that go beep in the night
Topic: technology Link here

My UPS issues continue. There's increasing evidence that the UPS in my office is reacting to something on its input; on one occasion the lights in the hallway dimmed slightly when it beeped. Hopefully it's not the upstream UPS. Time to install some monitoring software, something that I haven't needed in over 20 years of using UPSs.


Off net again
Topic: technology Link here

My network reliability with the National Broadband Network is still not what you'd expect of a modern network. Another short dropout today while I was in the office, so I was able to confirm that the ODU LED was red. That's supposed to mean something wrong with the Outdoor Unit (NBNese for “antenna”), but in the cases I've seen it had nothing to do with the antenna. Power cycled the NTD, taking the opportunity to connect it to the office UPS, and watched it gradually come up again. When all status lights were OK, tried a ping to the world. Nothing. ifconfig showed that the interface didn't have an IP address. Restart dhclient. Couldn't get an address, backgrounding. Restart dhclient. Got an address immediately.

What's the cause? I don't really trust dhclient to do the right thing, but the most likely explanation is that there really was one of these typical short outages, and nothing I did really made much difference: it was just a matter of time.

I wish the NBN could be held accountable for this sort of thing. Every time (I think 3 times in 7 years) my external web server goes down, I get a month's fees credited to the account. If the NBN had to do something like that, it would certain change a lot.


Masala Channa
Topic: food and drink Link here

More food from last week's cookbooks today, this time from “150 curries”: Masala channa, not exactly a very specific title. This one was different because it included tamarind:


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It's OK, but not really interesting enough to be a meal by itself. Certainly the onion and chili are necessary.


A use for measuring spoons after all
Topic: food and drink, opinion Link here

I've finally found a use for measuring spoons! Mridula Baljekar uses only volumetric measures in her recipes. How do I convert them to weights? Mainly guesswork, since it seems that I have thrown out all my old measuring spoons.


Monday, 19 October 2015 Dereel Images for 19 October 2015
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kgames revisited
Topic: technology Link here

After my porting attempts on Thursday, Callum Gibson reminded me that there are multiple ways to invoke imake. I've been there before, but it was 20 years ago:

You don't normally run imake directly, since it needs a couple of pathname parameters: instead you have two possibilities:

Strangely, make Makefile is the recommended way to create a new Makefile. I don't agree: one of the most frequent reasons to make a new Makefile is because the old one doesn't work, or because it just plain isn't there. If your imake configuration is messed up, you can easily remove all traces of a functional Makefile and have to restore the original version from tape. xmkmf always works, and anyway, it's less effort to type.

I suppose it's a sign of the times that xmkmf is now 80 lines long. I tried it, and sure enough, it worked. And after fixing a lot of errors (mainly functions returning void but not declared as such), managed to build kklondike. Run it? It didn't crash. It didn't do anything else, either: it just hung.

What next? This was on eureka, running FreeBSD 9.2-STABLE. How about a modern system? Tried again on stable, running a very recent 10.2-STABLE, and things looked completely different. First, I couldn't compile the output of lex: it claimed multiple definitions for input(). And sure enough, Xkw/laylex.l contained the line

#define input() (*yysource)++

But lex defines its own input() function—always? In any case, removed the define and it compiled. This is somewhat puzzling: gcc seemed to be happy enough with the redefinition. What am I missing?

There were quite a number of functions that specified no return type (and thus defaulted to int), but which really didn't return a value. Went through them one at a time. But then there was another strange message:

extern.c:19:6: error: redefinition of 'expl' as different kind of symbol
extern.c:19:6: note: previous definition is here

Huh? How can a definition contradict itself? The line in question didn't have any strangenessess about it:

char expl[128]; /* explanation */

This was a tiny source file, and I ran the thing through the preprocessor (-C -dD -E still works) and found no other definition of expl. But it seems it's now a function:

SYNOPSIS
     #include <math.h>
...
     long double
     expl(long double x);
...
DESCRIPTION
     The exp(), expf(), and expl() functions compute the base e exponential
     value of the given argument x.

It also seems that the compilers somehow know these functions even if, as in this case, the header file hasn't been read in. Is that an advantage? I couldn't find a way to get rid of it, so in the end I had to change the name of the variable. And it's clear that clang could greatly improve its error messages. Another case in point:

In file included from io.c:12:
/usr/include/varargs.h:34:2: error: "<varargs.h> is obsolete with this version of GCC."

A strange version of “GCC” indeed. But that's in the header files.

In the process, it's interesting to note the antiquity of this code, over 30 years old:

#ifndef lint
static char sccsid[] = "@(#)crib.c 5.1 (Berkeley) 5/30/85";
#endif not lint

That predates X11 (15 September 1987) and is less than a year before the original X. This file (kcribbage/crib.c) also contains a Berkeley copyright dating to 1980, which sounds dubious.

Finally everything built. Tried running kklondike:

=== grog@stable (/dev/pts/0) /home/ports/x11/kgames/kgames-1.0 45 -> kklondike/kklondike
Warning: Cannot convert string "playing_card" to type Pixmap
Warning: Cannot convert string "spade_lg" to type Pixmap
Error: Shell widget kklondike has zero width and/or height

In fact, I've seen that before, but it was decades ago. Configuration issue? What I need is a debugger, of course:

=== grog@stable (/dev/pts/0) /home/ports/x11/kgames/kgames-1.0 46 -> gdb kklondike/kklondike
GNU gdb 6.1.1 [FreeBSD]
...
This GDB was configured as "amd64-marcel-freebsd"...(no debugging symbols found)...
=== gdb ->

OK, time for debugging symbols. How do you do that again? Must be in the Imakefile. Sure enough, it contains (almost only):

#define PassCDebugFlags 'CDEBUGFLAGS=$(CDEBUGFLAGS)'

OK, set CDEBUGFLAGS accordingly. No change. Put it explicitly in the Imakefile. No change. I can put it in the individual Makefiles, of course, but there must be a cleaner way. Some other time.


Tuesday, 20 October 2015 Dereel Images for 20 October 2015
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Citylink spam
Topic: general, opinion Link here

Spam is illegal in Australia. They passed a law against it about 15 years ago. But who cares? Nobody pays attention to it. As if to prove a number of points, today I got this spam:

Date: Tue, 20 Oct 2015 00:00:03 -0600
From: "Herald Sun" <HeraldSun@e.newsdigitalmedia.com.au>
To: <CITYLINKED@LEMIS.COM>
Subject: Dame Edna has a very special offer for you
X-Spam-Status: No, score=0.0 required=5.0 tests=T_DKIM_INVALID autolearn=ham

Subscribe to get the paper with added pizzazz and moreWeb version

 Get a subscription with added pizzazz for half the price!

Possum, right now you can get all the news and all the sport on all your clever little devices for half the normal price for the first 12 weeks. That's only $3.50 per week.

As well as unrestricted digital access you can also sit back, relax and get your weekend papers home delivered at no extra cost.

There's so much wrong with this:

Is this the other side of the false positive I received a few days ago?


More porting
Topic: technology, photography Link here

Why am I trying to resurrect Keith Packard's games? There are alternatives, such as xpat2. A much more important issue is to ensure that Hugin will still work when I update the system.

OK, I have the latest port installed on stable. Tried it out. It ran, but the result of the alignment stage showed almost complete lack of alignment. What went wrong there?

Further investigation showed that the problem only occurs with my fisheye lens, the Olympus Zuiko Digital ED 8 mm f/3.5. With the Zuiko Digital ED 9-18mm F4.0-5.6 things worked normally.

Report the problem? Hardly. The latest FreeBSD release is 2013.0.0, released on 27 October 2013, nearly 2 years ago. There have been two releases since then, and potentially they fix the problem. So: back to upgrading Hugin, something that I put on the “too hard” queue 4 months ago. That was due to strangenesses in vigra that seem to have since Gone Away. Instead I had relatively simple problems with libpano13, which GNU autotools managed to blow out of all proportion. But finally it was done, and I could try to update Hugin. Of course, it didn't work, but at least I'm not at such a dead end as I was with vigra in June.


Strange error message
Topic: technology, opinion Link here

In the afternoon Yvonne told me that her system had hung. In to find the X server displaying only a small white square on a black background. What's that? On the console these messages:


https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20151020/big/Error-message.jpeg
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What an incomprehensible mess. Instead of ###!!! and lots of square brackets, how about something that a script can parse easily, and information that tells you what produced it?

Stopped and restarted the X server and things worked again. Looking through the web, it seems to be related to Adobe flash. And this report has a “solution”: disable hardware acceleration.

People, when will you understand the difference between solutions and workarounds?


Wednesday, 21 October 2015 Dereel
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Sourceforge: blast from the past
Topic: technology, opinion Link here

Went to the Hugin web site today. The response I got wasn't quite what I thought:

Error 503 Service Unavailable
Guru Meditation:
XID: 223985111
Varnish cache server

Where did that come from? As the code (Service Unavailable) suggests, it was transient. But the text takes me back decades.


Understanding convoluted error messages
Topic: technology Link here

While trying to port Hugin this morning, was presented with this error message:

/usr/bin/sed -i.bak 's/-pthread;-D_THREAD_SAFE/-pthread -D_THREAD_SAFE/g' /eureka/home/src/FreeBSD/svn/ports/graphics/hugin-2015.0.0/work/hugin-2015.0.0/src/hugin1/base_wx/CMakeFiles/huginbasewx.dir/flags.make /eureka/home/src/FreeBSD/svn/ports/graphics/hugin-2015.0.0/work/hugin-2015.0.0/src/hugin1/hugin/CMakeFiles/hugin.dir/flags.make /eureka/home/src/FreeBSD/svn/ports/graphics/hugin-2015.0.0/work/hugin-2015.0.0/src/hugin1/hugin/CMakeFiles/hugin.dir/link.txt /eureka/home/src/FreeBSD/svn/ports/graphics/hugin-2015.0.0/work/hugin-2015.0.0/src/hugin1/nona_gui/CMakeFiles/nona_gui.dir/flags.make /eureka/home/src/FreeBSD/svn/ports/graphics/hugin-2015.0.0/work/hugin-2015.0.0/src/hugin1/nona_gui/CMakeFiles/nona_gui.dir/link.txt /eureka/home/src/FreeBSD/svn/ports/graphics/hugin-2015.0.0/work/hugin-2015.0.0/src/hugin1/ptbatcher/CMakeFiles/PTBatcher.dir/flags.make /eureka/home/src/FreeBSD/svn/ports/graphics/hugin-2015.0.0/work/hugin-2015.0.0/src/hugin1/ptbatcher/CMakeFiles/PTBatcher.dir/link.txt /eureka/home/src/FreeBSD/svn/ports/graphics/hugin-2015.0.0/work/hugin-2015.0.0/src/hugin1/ptbatcher/CMakeFiles/PTBatcherGUI.dir/flags.make /eureka/home/src/FreeBSD/svn/ports/graphics/hugin-2015.0.0/work/hugin-2015.0.0/src/hugin1/ptbatcher/CMakeFiles/PTBatcherGUI.dir/link.txt /eureka/home/src/FreeBSD/svn/ports/graphics/hugin-2015.0.0/work/hugin-2015.0.0/src/hugin1/stitch_project/CMakeFiles/hugin_stitch_project.dir/flags.make /eureka/home/src/FreeBSD/svn/ports/graphics/hugin-2015.0.0/work/hugin-2015.0.0/src/hugin1/stitch_project/CMakeFiles/hugin_stitch_project.dir/link.txt
sed: /eureka/home/src/FreeBSD/svn/ports/graphics/hugin-2015.0.0/work/hugin-2015.0.0/src/hugin1/nona_gui/CMakeFiles/nona_gui.dir/flags.make:
No such file or directory

The original looks even worse, of course, with no line breaks whatsoever. What does that mean? Isn't it so much easier to replace the spaces with newline characters?

/usr/bin/sed
-i.bak
's/-pthread;-D_THREAD_SAFE/-pthread
-D_THREAD_SAFE/g'
/eureka/home/src/FreeBSD/svn/ports/graphics/hugin-2015.0.0/work/hugin-2015.0.0/src/hugin1/base_wx/CMakeFiles/huginbasewx.dir/flags.make
/eureka/home/src/FreeBSD/svn/ports/graphics/hugin-2015.0.0/work/hugin-2015.0.0/src/hugin1/hugin/CMakeFiles/hugin.dir/flags.make
/eureka/home/src/FreeBSD/svn/ports/graphics/hugin-2015.0.0/work/hugin-2015.0.0/src/hugin1/hugin/CMakeFiles/hugin.dir/link.txt
/eureka/home/src/FreeBSD/svn/ports/graphics/hugin-2015.0.0/work/hugin-2015.0.0/src/hugin1/nona_gui/CMakeFiles/nona_gui.dir/flags.make
/eureka/home/src/FreeBSD/svn/ports/graphics/hugin-2015.0.0/work/hugin-2015.0.0/src/hugin1/nona_gui/CMakeFiles/nona_gui.dir/link.txt
/eureka/home/src/FreeBSD/svn/ports/graphics/hugin-2015.0.0/work/hugin-2015.0.0/src/hugin1/ptbatcher/CMakeFiles/PTBatcher.dir/flags.make
/eureka/home/src/FreeBSD/svn/ports/graphics/hugin-2015.0.0/work/hugin-2015.0.0/src/hugin1/ptbatcher/CMakeFiles/PTBatcher.dir/link.txt
/eureka/home/src/FreeBSD/svn/ports/graphics/hugin-2015.0.0/work/hugin-2015.0.0/src/hugin1/ptbatcher/CMakeFiles/PTBatcherGUI.dir/flags.make
/eureka/home/src/FreeBSD/svn/ports/graphics/hugin-2015.0.0/work/hugin-2015.0.0/src/hugin1/ptbatcher/CMakeFiles/PTBatcherGUI.dir/link.txt
/eureka/home/src/FreeBSD/svn/ports/graphics/hugin-2015.0.0/work/hugin-2015.0.0/src/hugin1/stitch_project/CMakeFiles/hugin_stitch_project.dir/flags.make
/eureka/home/src/FreeBSD/svn/ports/graphics/hugin-2015.0.0/work/hugin-2015.0.0/src/hugin1/stitch_project/CMakeFiles/hugin_stitch_project.dir/link.txt
sed:
/eureka/home/src/FreeBSD/svn/ports/graphics/hugin-2015.0.0/work/hugin-2015.0.0/src/hugin1/nona_gui/CMakeFiles/nona_gui.dir/flags.make:
No such file or directory

The error itself was simple: this was a list from the old port Makefile, and nona_gui has been removed. But it's so much easier, for me at any rate, to understand the second version, though I suppose the web generation is used to 230 character lines.


Programming language complexity
Topic: technology, history, opinion Link here

25 years ago I wrote a B-tree storage system called Monkey in C++. At the time I saw it as being the logical development of C, as long as you ignored some of the more bizarre features.

Since then I have returned to programming in C, mainly because that's what the environment required. 11 years ago I was required to backport Monkey to C. In the process I discovered that C++ had become even more bizarre, and the backporting brought insights that were hidden when I wrote in C++. The C version was slightly more verbose, but much clearer in intention.

Today I had less pleasant experiences with C++. Much of Hugin is written in it, and while trying to port it I got:

[ 45%] Building CXX object src/tools/CMakeFiles/autooptimiser.dir/autooptimiser.cpp.o
/eureka/home/src/FreeBSD/svn/ports/graphics/hugin-2015.0.0/work/hugin-2015.0.0/src/tools/align_image_stack.cpp:196:38: error: reference to 'lock' is ambiguous
            hugin_omp::ScopedLock sl(lock);
                                     ^
/eureka/home/src/FreeBSD/svn/ports/graphics/hugin-2015.0.0/work/hugin-2015.0.0/src/tools/align_image_stack.cpp:124:24: note: candidate found by name lookup is 'lock'
static hugin_omp::Lock lock;
                       ^
/usr/include/c++/v1/mutex:424:1: note: candidate found by name lookup is 'std::__1::lock'
lock(_L0& __l0, _L1& __l1, _L2& __l2, _L3& ...__l3)
^
/usr/include/c++/v1/mutex:350:1: note: candidate found by name lookup is 'std::__1::lock'
lock(_L0& __l0, _L1& __l1)
^

What's that? Took a look in /usr/include/c++/v1/mutex (an unlikely but correct name) which, not surprisingly, proved to be definitions for some mutex implementation, and there are two different templates for lock. Is that what I want? No, the code in question simply used the word lock as a variable, defined on line 124:

static hugin_omp::Lock lock;

What kind of header file hell has got me into this situation? There's one way to find out: take the compiler invocation, strip the -o align_image_stack.o and replace it with a -C -dD -E, which will display the entire preprocessor output. And make always shows the invocation—doesn't it? Not, it seems, with cmake.

RTFM time. It seems there's a debug option l to make: make -d l shows the invocations even if they have been suppressed with an @ “or other ‘quiet’ flags. And sure enough, it worked—for the main make. Subordinate makes, including the one that interested me, reverted to the standard behaviour.

Spent quite a bit of time trying to find out how to display the invocation, unfortunately without success. This all takes far longer than it should.

Finally, as my time was running out, I was reminded of a little trick I did decades ago. Tandem Computers' TAL compiler had an irritating habit of not outputting the number of errors it detected. So I wrote a little wrapper procedure that ran the compiler and then printed the error count and a snide comment. Paraphrasing,

if error^count > 50 then                         !Very rude remark
   print (" This program is the work of a subhuman and bears no relationship to the TAL language");
...
elif error^count then                            !Rude remark
...
else
   print (" Although no syntactical errors were discovered, it is unlikely that this program will run");

It's easier to do these things now. The compiler has 7 different names, but there's a good chance that it's invoked as c++. That's in /usr/bin/c++, and since /usr/local/bin is in front of /usr/bin in my PATH, all I needed was a tiny script in /usr/local/bin/c++:

#!/bin/sh
echo 'c++' $*
/usr/bin/c++ $*

Unfortunately, that didn't work: cmake is clever enough to put full pathnames into the Makefile, so it still invoked the original. It looks as if I'll need to rename the compiler just to get the invocation line.

Haven't we come a long way in the 20 years since PUS?


Programming language complexity
Topic: technology, opinion Link here

At university I discovered this wonderful new language, Algol. It was so much better than FORTRAN, and it was so easy to program. And then I discovered that the version we were using was Algol 60, codified (in the pre-Y2K days) in 1960. There was also an Algol 68, and although this was in 1970, no compiler was available for it for our university computer (an ICL System 4/50, a Spectra 70 copy).

Why? Over the years I investigated the language, and looked for compilers for the computers with which I worked. None came. The language was too complicated.

How times have changed! C++ runs rings around Algol 68 in terms of complexity. So-called “Object orientation” allows individual programmers to build their own Tower of Babel. And lately I've found that, more and more, modern languages are polluting their name spaces. The original Algol made a very clear distinction between basic symbols and variables, so that I really did once write:

               for for:=start step step until until do
                    begin real z;
                    z:=poly (a,for,m);
                    write (30,format((-sn.8d@-nd)),for);
                    end
               end

But in the last few days I'm running into more and more needless namespace pollution. Why do modern compilers implicitly know expl(), even though the vast majority of programs don't use exponentiation? Why am I getting mutex implementations interfering with simple programs who, long before the mutex implementation, chose a simple and obvious variable name? O tempora! O mores!


Thursday, 22 October 2015 Dereel Images for 22 October 2015
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Understanding advertising
Topic: general, opinion Link here

Once upon a time advertising served a useful purpose. How long ago was that? Now there's a whole industry of people who create buzzwords and improbable claims.

One of the less obnoxious things are the labels the manufacturers put on their items. These containers, for example:


https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20151022/big/Toothpaste-3.jpeg
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What are they? In fact, the small print tells you: Fluoriguard® Toothpaste. Well, it tells you that it's a kind of toothpaste. What's Fluoriguard®? It seems to be a kind of mouthwash.

But that's not what the designers consider important: it has a Great Regular Flavour (what's an irregular flavour like?) and LIQUID CALCIUM (quite an achievement at room temperature). Yes it has a Calcium carbonate base, but that's neither liquid nor something that is worth stressing. By comparison, “Strenghtens Teeth Freshens Breath” sounds perfectly plausible.

Then of course there's a seal that you have to break to use the product. What's written on it? “Do not use if this seal is broken”. How else can I use it?

But the big difference is between the two tubes. The one on the left is empty, having offered “Maximum Cavity Protection” for several months. The new one isn't as ambitious: just “Cavity Protection”. Why is it degraded? The real information, in more small print, shows that the composition hasn't changed, and it doesn't mention calcium, liquid or otherwise. My best guess is that the designers wanted to emphasize “Cavity”.

I wonder what advertising will be like in 50 years' time.


Back from the future
Topic: history, opinion Link here

Yvonne told me that Facebook is full of the fact that today is the date in the ”future“ when Marty McFly and Doc Brown arrive in the future in Back to the Future Part II. Well, yesterday, but it's always yesterday in the USA. So we watched part I tonight.

The whole thing started 30 years ago, in October 1985, when we were at the Beach of Passionate Love in Kota Bharu. And Marty travels back in time to 5 November 1955, when I was in... Kota Bharu. It's really difficult to think that these times are 30 and 60 years ago. And some of the details are interesting, like having the 1955 incarnation of Doc viewing the content of a 1985 video camera on a 1955 TV. But sure enough, in that time the standards didn't change that much.


C++ namespace hell
Topic: technology Link here

Spent a bit more time trying to understand the Hugin compilation problems. Finally got my wrapper scripts to output useful invocation lines, which, as I expected, were long:

c++ -DHUGIN_HSI -O2 -pipe -fstack-protector -fno-strict-aliasing --std=c++11 -O2 -pipe -fstack-protector -fno-strict-aliasing -I/eureka/home/src/FreeBSD/svn/ports/graphics/hugin-2015.0.0/work/hugin-2015.0.0/src -I/eureka/home/src/FreeBSD/svn/ports/graphics/hugin-2015.0.0/work/hugin-2015.0.0/src/hugin_base -I/eureka/home/src/FreeBSD/svn/ports/graphics/hugin-2015.0.0/work/hugin-2015.0.0/src/celeste -I/usr/local/include -I/usr/local/include/OpenEXR -I/eureka/home/src/FreeBSD/svn/ports/graphics/hugin-2015.0.0/work/hugin-2015.0.0/src/foreign -I/usr/local/include/python2.7 -c /eureka/home/src/FreeBSD/svn/ports/graphics/hugin-2015.0.0/work/hugin-2015.0.0/src/tools/align_image_stack.cpp

Add a C -dD -E to that and I got the preprocessor output—all 10 MB of it:

=== root@stable (/dev/pts/1) /usr/ports/graphics/hugin-2015.0.0/work/hugin-2015.0.0/src/tools 233 -> l cppout.cpp
-rw-r--r--  1 root  wheel  10,727,532 22 Oct 13:29 cppout.cpp
=== root@stable (/dev/pts/1) /usr/ports/graphics/hugin-2015.0.0/work/hugin-2015.0.0/src/tools 234 -> wc -l cppout.cpp
  282590 cppout.cpp

How do you fight your way through that? There was a way to show which header files were included, and from where. Spent some time looking before I found that this is the -H flag:

=== root@stable (/dev/pts/1) /usr/ports/graphics/hugin-2015.0.0/work/hugin-2015.0.0/src/tools 236 -> c++ -DHUGIN_HSI -O2 -pipe -fstack-protector -fno-strict-aliasing --std=c++11 -O2 -pipe -fstack-protector -fno-strict-aliasing -I/eureka/home/src/FreeBSD/svn/ports/graphics/hugin-2015.0.0/work/hugin-2015.0.0/src -I/eureka/home/src/FreeBSD/svn/ports/graphics/hugin-2015.0.0/work/hugin-2015.0.0/src/hugin_base -I/eureka/home/src/FreeBSD/svn/ports/graphics/hugin-2015.0.0/work/hugin-2015.0.0/src/celeste -I/usr/local/include -I/usr/local/include/OpenEXR -I/eureka/home/src/FreeBSD/svn/ports/graphics/hugin-2015.0.0/work/hugin-2015.0.0/src/foreign -I/usr/local/include/python2.7 -c /eureka/home/src/FreeBSD/svn/ports/graphics/hugin-2015.0.0/work/hugin-2015.0.0/src/tools/align_image_stack.cpp -C -dD -E    -H -o foo 2> bar
=== root@stable (/dev/pts/1) /usr/ports/graphics/hugin-2015.0.0/work/hugin-2015.0.0/src/tools 237 -> wc -l bar
    2476 bar

That's 2,476 header files! For a single source file of 40 kB and 1,146 lines, more than 2 header files per source line, and a total output nearly 300 times the source file. The header files are wagging the dog.

Looking through the include sequence didn't show anything of much use:

. /usr/include/c++/v1/fstream
.. /usr/include/c++/v1/ostream
... /usr/include/c++/v1/ios
.... /usr/include/c++/v1/__locale
..... /usr/include/c++/v1/mutex

None of these #includes were conditional. It seems inevitable that once you include fstream, you end up including mutex along with its namespace-polluting templates. What a mess C++ is!

Could this be a compiler dependency? There's nothing obvious in the Makefile from the previous version, apart from the note

# If default compiler is GCC, upgrade it because
# g++ 4.2 is too old. Basically, use the same compiler as graphics/OpenEXR
# see https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=197898

OK, let's try that. Configuration fails, but not before telling me that it was using gcc. But config.log showed that it was using clang. Somehow I have a feeling that everything is going crazy.

Surely somebody else has run into this problem before. Sent a message out to the Hugin forum asking for help.


Tandem/16 control panel
Topic: technology, history Link here

For my first home-made computer I built a “console” or “control panel” with which I could single-step the machine and monitor its activity. Older computers had these as a matter of course, but I don't know of any other for a Z80:


https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20150823/big/Console-front.jpeg
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During my time with Tandem Computers we had some reason to examine the Tandem/16 processor in more detail. By that time, production had stopped, and I was given one of the three control panels that manufacturing had built for the three factories (Cupertino CA, Reston VA, and Neufahrn BY). Mine came from Neufahrn, and I'm pretty sure it's the only one left in existence:


https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20151022/big/Maintenance-panel-4.jpeg
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What did it do? I have a vague recollection, but only a vague one. I can't even recall if it was necessary to connect all the side connectors on the back to the CPU:


https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20151022/big/Maintenance-panel-5.jpeg
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That's quite possible. The T/16 CPU had multiple boards (CPU, MEMPPU and memory), and the connectors between them looked similar. Here a photo I took of a “Twin Mini” T/16 machine in Reston in August 1992, after I had left Tandem, and clearly after the machine had ceased being used:


https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/19920802/big/tns-1-2.jpeg
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The T/16 was a microprogrammed machine, and the top part of the panel showed the microprocessor state:


https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20151022/big/Maintenance-panel-4-detail-1.jpeg
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The next section was a duplicate of the normal front panel display: a 16 bit LED display and switch register, accessible via special instructions:


https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20151022/big/Maintenance-panel-4-detail-2.jpeg
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The next part selected specific processor registers (register stack and environment). The important environment registers were E, which was something like a processor status word, P, the program counter, and two stack pointers S and L, which correspond to something like a stack pointer and frame pointer on modern processors. MASK could have been the interrupt mask. I have no idea what A, B and C were.

The register stack was an 8 word wraparound stack numbered R0 to R7, though the exact allocation depended on the register stack pointer in the bottom 3 bits of the E register. It's not clear what X1, X2 and X3 meant, and I'm left wondering if it wasn't a hangover from when the micromachine may have used these three registers as index registers. The legend on the PCB shows that it's part number 51072, revision B, and dates from 1976. That's round the time Tandem shipped its very first machines, so it's possible that this is really a hangover from pre-production models.

I really no longer have any idea what the Microfunction and Interrupt selections meant.


https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20151022/big/Maintenance-panel-4-detail-3.jpeg
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The bottom part was some kind of breakpoint system:


https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20151022/big/Maintenance-panel-4-detail-4.jpeg
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Again, I'm guessing at a lot of this. The machine had four “maps”, 128 kB memory segments: system date, system code, user data and user code, and that's what's shown on the right hand side of the rotary switch selections (“memory”). But what's the left hand side? Setting the base address for the maps, maybe?

It would be nice if somebody could find the micromachine description.


Friday, 23 October 2015 Dereel Images for 23 October 2015
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Under the weather
Topic: general, history, opinion Link here

Somehow I wasn't feeling my best today. Nothing obviously wrong, apart from listlessness and lack of appetite. The last couple of nights I ate far too much, so that in itself isn't significant, but I didn't eat any lunch and only a little in the evening. To be observed.


Solar hot water: not enough
Topic: general, opinion Link here

It's been unseasonally warm this month, which of course means lots of sunshine. How much do we need to get our hot water only from sunshine? Last weekend I turned off the electric boost, and until today we had no problems with hot water. But things have become marginally cooler. In the last two days the maximum temperature was more like the monthly average, and now we note that the water is not hot enough. So that electric boost is necessary, even in spring.


We don't need no complete texts
Topic: technology, photography, opinion Link here

For some reason my message to the Hugin forum didn't arrive. More attachment stupidity? But it's run by the Google behemoth, so it should be able to accept mail from Gmail.

What a pain Gmail is! It's good for filtering spam, but the user interface! After I enlarged the tiny window, I got:


https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20151023/big/not-enoug-s....png
Image title: not enoug s...          Dimensions:          1025 x 121, 8 kB
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WHY do people have to truncate things like that? It's reaching epidemic proportions.


Comparing camera sizes
Topic: photography Link here

Juha Kupiainen is thinking of buying a smaller camera for use when riding his bike. Given the quality his mobile phone delivers, that's understandable.

But what camera? That's his decision, but it gave me time to think (and talk) about how the small Micro four-thirds cameras fit. Here's an example with three of my old compact cameras, my old Pentax Z1 and the Olympus E-PM2 with the M.Zuiko Digital ED 14-42mm f3.5-5.6 EZ lens. Here all images with lens retracted, where applicable:


https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20151023/big/Cameras-1.jpeg
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At first sight, it's not immediately clear which one is the Olympus; certainly the (considerably) older compacts are in the same order of size.


Working around UPS issues
Topic: general Link here

My office UPS is still beeping at irregular intervals. Does it have something to do with it being in series with the shed UPS? Connected it to a non-UPS power socket. So far it hasn't beeped again.


He followed me home, can I keep him?
Topic: animals Link here

Yvonne off to sell some horses this afternoon, so I had to take the dogs for a walk by myself. Not an easy thing at the best of times. But today we saw a dog—looks like a Border Collie—who wanted to play.


https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20151023/big/Strange-dog-1.jpeg
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How do you stop three dogs on leads from running around in all directions when a fourth dog is taunting them? With great difficulty. It proved that I had put Leonid's lead on his collar, not his harness, and he quickly got rid of that. Sasha wasn't quite sure of the whole matter and ran around in circles, tying himself up with his lead. And a little later Nikolai managed to open his harness. I'm not sure if it's damaged, but it happened a couple of times, and despite the fact that it's tied round his left foreleg, he managed to lose it completely.

Dragged them back home as best I could, losing Niko about 50 metres before the house gate. Got the other two in, shut the gate, untangled them sufficiently to let them go, and then paid my attention to Niko. Got him in as well, with the other dog outside.

Turned around, and they were all inside the gate! Smaller dogs can get between the planks around the gate. So I ended up having to start all over again and put our dogs in the area around the garden, which is fenced off well enough to keep smaller dogs out.

Who does he belong to? He's friendly enough. Put out a post on Facebook, but got no replies. Yvonne returned and found, along with his registration number, initials and a phone number: C.A.R. 03 9706 3187. Surely not my old school mate C.A.R. Hoare?

Called the number. Central Animal Records. We can't take your call right now, but if you leave a message, we'll call back. The message menu was strange enough that I timed out, but I was left with an assurance that they'd call back. They didn't.

We left him in front of the house with water but no food. Later we checked; he was gone, hopefully home.


Saturday, 24 October 2015 Dereel Images for 24 October 2015
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Piccola: still tearing out her hair
Topic: animals Link here

It's been months since Piccola started to tear out her fur, but it's still not over. Today I caught her at it on my office desk:


https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20151024/big/Piccola-1-detail.jpeg
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When is it going to stop?


Garden: moving target
Topic: gardening Link here

It's been over a week since the middle of the month, when I normally do my garden photos, and I'm still not done. Somehow things keep changing so fast. Last week the roses were just coming out, and the Dicksonia antarctica was showing its first new fronds. Now already things look completely different:


https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20151016/big/Dicksonia-antarctica.jpeg
Image title: Dicksonia antarctica          Dimensions:          4608 x 3456, 4096 kB
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https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20151024/big/Dicksonia-antarctica.jpeg
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The roses are also doing well, so well that I didn't have a comparison last week:


https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20151024/big/Roses-4.jpeg
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And our Paulownia kawakamii seems to have survived after all. Here 2 weeks ago and today:


https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20151011/big/Paulownia.jpeg
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Of course, they're known for being late with their foliage, and it's not surprising that this tiny shoot didn't flower this year.

But apart from that, it's still a very bare garden. Oh, to find somebody who will lay the irrigation!


Understanding in-camera HDR
Topic: photography, opinion Link here

My Olympus OM-D E-M1 has various support for HDR imaging: exposure bracketing and even in-camera HDR images. There are clear strangenesses about both of them. There are two different forms of exposure bracketing, both of which insist on an uneven number of images. One is intended for HDR and offers brackets of 3, 5 or 7 exposures at 2 or 3 EV intervals; the other is intended for unclear exposure situations and offers 2, 3, 5 or 7 exposures at 0.3, 0.7 or 1.0 EV intervals. Why the difference? Clearly the design considered the application rather than the functionality.

I tried the in-camera HDR shortly after buying the camera and rejected it as being useless. But a few weeks ago I found a good out-of-camera image. I tried myself and got results as poor as the ones I had two years ago. In the discussion on the German Olympus forum Reinhard “Olympus can do no wrong” Wagner explained the errors of my ways and pointed to his blog, in which he demonstrated his own photos:

http://3.bp.blogspot.com/-3IckJ-r1MRM/VawTinS7h9I/AAAAAAAAGJk/Tuzf3Epykzg/s1600/R7196309.JPG http://1.bp.blogspot.com/-oSOOv3hUfTo/VawTpJ70G5I/AAAAAAAAGJ8/LZ-cZ6O_gtY/s1600/R7196311.JPG http://1.bp.blogspot.com/-No9_V1Xt1lo/VawTm4c52FI/AAAAAAAAGJ0/FmHHvfGohXc/s1600/R7196310.JPG http://2.bp.blogspot.com/-VojbsTCK_7Q/VawTsJvMAxI/AAAAAAAAGKE/vVdMpNlkNNc/s1600/R7196311_2_3_4_5d.JPG

These aren't the sequence he showed in his blog, but I think they're in the sequence least to most dynamic range. And clearly the big difference is between the first three and the last one.

The sequence is, in fact, “HDR1”, normal, “HDR2” and processed by an old version “HDR Project Platin” (5 exposures in 2 EV steps). He also comments that the newer version produces better results.

So for me, this sequence confirms my opinion that the in-camera “HDR” is useless. The first impression is that “HDR1” produces worse results out of 4 images than the camera does with a perfectly normal non-HDR image. In fact, there are differences: clearly the normal image has more sun in the church, which improves things, and the “HDR1” has better detail in the outside. Still nothing to be happy about. But Reinhard? “I think most people will agree that the blokes at Olympus have done a pretty good job”.

Reinhard is no fool. On the contrary, he's an expert in his field. Why is he happy with these results? I've been puzzling about this for two weeks. One thing he said was that I was trying sequences with too much contrast (why? That's what HDR is for, and the in-camera HDR takes 4 images where mine get by with 3). So today, while taking the garden photos, I tried a simpler subject: the shade area in the garden, which with sunlight outside is about 5 EV darker than the surroundings. That's not beyond the range of a normal photo:


https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20151024/big/shade-area-single.jpeg
Image title: shade area single          Dimensions:          4603 x 3454, 3520 kB
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And clearly postprocessing can improve that. Here's what DxO Optics “Pro” and Ashampoo Photo Optimizer do with that result. First the original, secondly DxO's “HDR” processing, thirdly both DxO and Ashampoo, and fourthly just Ashampoo. Run the cursor over any image to compare with the next:


https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20151024/big/shade-area-single.jpeg
Image title: shade area single          Dimensions:          4603 x 3454, 3520 kB
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https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20151024/big/shade-area-single-hdr.jpeg
Image title: shade area single hdr          Dimensions:          4603 x 3454, 4288 kB
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https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20151024/big/shade-area-single-hdr-opt.jpeg
Image title: shade area single hdr opt          Dimensions:          4603 x 3454, 4672 kB
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https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20151024/big/shade-area-single-opt.jpeg
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Certainly the DxO processing improves the skies, and together they improve the dark area. But it's not so spectacular. The result with enfuse is far more convincing. Here the original single image for comparison, then a three-exposure bracket processed with enfuse, then that image optimized with Ashampoo:


https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20151024/big/shade-area-single.jpeg
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https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20151024/big/shade-area-HDR.jpeg
Image title: shade area HDR          Dimensions:          4603 x 3454, 4208 kB
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https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20151024/big/shade-area-HDR-opt.jpeg
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And what does the in-camera HDR produce? Here the reference image, “HDR1” and “HDR2”:


https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20151024/big/shade-area-single.jpeg
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https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20151024/big/shade-area-hdr1.jpeg
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https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20151024/big/shade-area-hdr2.jpeg
Image title: shade area hdr2          Dimensions:          4603 x 3454, 2848 kB
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It's all washed out! Yes, “HDR2“ shows the shadow details better, but the grass looks burnt-out. I can't really see any advantage in this kind of image. Why did Olympus do it, and why does Reinhard think it's even acceptable, let alone a “good job”?


More macro processing
Topic: photography, opinion Link here

Found another Diuris sulphurea while walking the dogs today. Just what I need to try out my new macro lens:


https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20151024/big/Diuris-sulphurea-10.jpeg
Image title: Diuris sulphurea 10          Dimensions:          4608 x 3456, 736 kB
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https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20151024/big/Diuris-sulphurea-2.jpeg
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https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20151024/big/Diuris-sulphurea-15.jpeg
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Are they any better than the photos I took last year? Doubtful.

The real question is to be able to see what you want to take. Yes, you have a viewfinder display, but it shows what the camera is pointing at, and not necessarily what you want to see.

How can I change that? The big issue with macros at this size (roughly 7 cm from the subject, depth of field at f/22 of 0.7 mm) is just positioning the camera correctly.

I have a two-way macro rail:


https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20090723/big/focusing-rail-5.jpeg
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That helps. But it doesn't change the point of view. What I really need is something that can move around an imaginary sphere around the subject, keeping its distance. And how about that, that's exactly what a panorama bracket does: it moves the camera around the entrance pupil. For macros, you only need two modifications: first, move the camera far further back (imagine an entrance pupil, say, 7 cm in front of the lens), and secondly find a way to avoid fouling the subject. That should be possible.


Sunday, 25 October 2015 Dereel Images for 25 October 2015
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Time for a disk replacement
Topic: technology Link here

I bought the current hardware for eureka nearly 2 years ago, but I still haven't upgrade the operating system. Most recently, compilation problems with Hugin have deferred the issue.

But there are other pressures. Lately I've been getting:

Oct 25 13:00:49 eureka kernel: (ada2:ahcich2:0:0:0): READ_FPDMA_QUEUED. ACB: 60 00 e2 9e d8 40 e6 00 00 01 00 00
Oct 25 13:00:49 eureka kernel: (ada2:ahcich2:0:0:0): CAM status: ATA Status Error
Oct 25 13:00:49 eureka kernel: (ada2:ahcich2:0:0:0): ATA status: 41 (DRDY ERR), error: 40 (UNC )
Oct 25 13:00:49 eureka kernel: (ada2:ahcich2:0:0:0): RES: 41 40 f0 9e d8 00 e6 00 00 00 01
Oct 25 13:00:49 eureka kernel: (ada2:ahcich2:0:0:0): Error 5, Retries exhausted
Oct 25 13:00:49 eureka kernel: g_vfs_done():ada2p1[READ(offset=1982953521152, length=131072)]error = 5

It seems to be only local, and so far it means lack of access only to one file, but clearly something needs to be done. And indeed I had done just that some months ago: this problem first showed itself 4 months ago, and I've been waiting ever since to replace the disk. Finally got round to doing it, in the process discovering that this is not an accurate representation of what was in the box:

Filesystem   1048576-blocks      Used   Avail Capacity  Mounted on
/dev/ada0s1a         19,832    17,086   1,159    94%    /
/dev/ada0s1d         19,832     6,215  12,030    34%    /destdir
/dev/ada2p1       1,847,816 1,633,401  66,589    96%    /home
/dev/ada3p1       3,814,382 2,779,568 996,670    74%    /Photos

In fact, there were 4 disks. ada1 is 500 GB in size, and has a currently unused partition:

  104857600  871910402       5  freebsd-ufs  (415G)

It appears to be an old incarnation of /home. And then there's ada1:

=>         0  1953520002  ada1s1  BSD  (931G)
           0  1953520002       4  freebsd-ufs  (931G)

That, too, I suspect, is an old /home.

The other problem was that I didn't have enough power cables for the disks. The high end power supply I bought less than 2 years ago still seems to be oriented towards floppies and PATA disks. I had to remove ada1 to put in the new 3 TB disk.

And then the real fun started: how do you synchronize the disks? With rsync, of course. The disk also contained a months-old copy of /home. And what invocations? I always have trouble with this. First time round I tried:

rsync -LHav --partial /home /mnt
home/Book/ABSDA/
home/Book/ABSDA/BOOKFILES
home/Book/ABSDA/BOOKIDS
home/Book/ABSDA/INDEX
home/Book/ABSDA/Make.log
...

Wait a minute. This directory hasn't changed in 14 years. Why is it copying every file? Because I forgot that rsync loves to go one level deeper, so instead of /mnt/book/ABSDA, I got /mnt/home/book/ABSDA. What I need is a trailing slash. Stop, rm -rf /mnt/home, and start again:

rsync -LHav --partial /home /mnt
...
OLD-STUFF/Sysconfig/dereel/dereel/dereel/dereel/Makelogs/xchat2
OLD-STUFF/Sysconfig/dereel/dereel/dereel/dereel/Makelogs/xchm
OLD-STUFF/Sysconfig/dereel/dereel/dereel/dereel/Makelogs/xcpustate

A symlink loop! Further investigation showed that I shouldn't have used the A option. So the final invocation was:

rsync -Hav --partial /home/ /mnt

Why does it always take me multiple times to get there?


ALDI shoe cabinet
Topic: general, opinion Link here

Yvonne bought a shoe cabinet on special at ALDI yesterday. It's a small thing, hopefully big enough for my shoes. Today I unpacked the package. What a mess!


https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20151025/big/Shoe-cabinet.jpeg
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How can there be that many components to a small shoe cabinet? And how do you put them together? ALDI instructions are always good for a laugh, if you're not directly concerned, but these must be the worst I've seen. Apart from unmarked components (most are, but they've left some unmarked to test your intelligence), the details are appalling. There are two components d, which prove to be drawer slides, though you couldn't recognize it from the drawing. There are four different ways round that they can be attached. And once I found the right way round (not documented), there are three different positions in which they can be assembled.

People, do you think you're doing yourselves a favour with this? Especially with a 60 day return policy, you're going to get hundreds of them returned.


Monday, 26 October 2015 Dereel Images for 26 October 2015
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The limits of wrapper scripts
Topic: technology, opinion Link here

Completed the transition to the new /home disk today with no problems beyond being off the air for an hour while I ran a last rsync. The next step is to bring the backup system stable up to date. Started a buildworld, which died almost immediately with an invalid .depend file—which it had just created! It took quite a while to discover that the culprit was my compiler wrapper script, which echoed the invocation to stdout, in this case the .depend file. So while it's a useful trick to work around deficiencies in cmake, it's not completely transparent.


New mystery flowers
Topic: gardening Link here

Brought back some samples of a couple of new flowers today. Here are the flowers; I'll get some photos of the plants later.

This one is tiny and prostrate. The plant is about 2-3 cm off the ground, and the flowers are about 5 mm across:


https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20151026/big/Mystery-1-4.jpeg
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And this one is a climbing bush, about 60 cm high. The flowers are about 1 cm across:


https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20151026/big/Mystery-2-4.jpeg
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It produces seed pods.


More macro pain
Topic: photography, opinion Link here

Taking the photos of the flowers wasn't easy. I was using my new Olympus Zuiko Digital 35mm F3.5 Macro lens, of course, and like the SMC Macro-Takumar 50 mm f/4, it has a significant disadvantage, a built-in lens hood, something that the Zuiko Digital ED 50 mm F2.0 Macro doesn't have:


https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20151027/big/Zuiko-35-Takumar-50-Zuiko-50-3.jpeg
Image title: Zuiko 35 Takumar 50 Zuiko 50 3          Dimensions:          4523 x 2006, 1968 kB
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The result is that at the closest, the subject is pretty much inside the lens hood, especially for the 35 mm lens. And that makes lighting really difficult, as this failure shows:


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The ring flash is on the front of the lens, ahead of the subject, so most of the light is reflected from behind I don't know a good answer to that. Yes, I can put my 50 mm Zuiko lens on instead, but even with the two extension tubes (total extension 26 mm) I can only barely get the same magnification as the 35 mm with no tubes. I suppose I should try the Takumar with a reversing ring. But I had hoped to have simplified things with the new lens, and I still need to convince myself that the image quality of the Takumar is up to that of the other two macros.

The extension tubes are still an issue with autofocus. I'm not sure how important it is, since there's an interaction with image size, so the easiest way to focus appears to be with the slide, but it really seems as if no Four thirds lens will autofocus with them in between.

Another issue that shows up here is dirt on the sensor. That's not supposed to happen with Olympus cameras. How do I get it off again?


Tuesday, 27 October 2015 Dereel Images for 27 October 2015
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Another NBN outage!
Topic: technology, opinion Link here

Most of my network outages seem to happen in the middle of the night, to a point where I often wonder if they're just unannounced maintenance. But lately they've been happening in the daytime: 15 October 2015 10:36:43, 18 October 2015 13:14:34, and now today at 13:39:40. In each case, I was able to observe that the ODU LED on the NTD was red. Last week I suspected that my actions had no effect. Today I had the time to confirm that: we were off the net for over three hours, and of course power cycling had no effect on the ODU LED.

After 40 minutes, powered up my mobile phone, found a suitable position in the garden and called Aussie Broadband. Yes, National Broadband Network had confirmed that there was an outage, and that it had started 15 minutes ago.

15 minutes? That was 40 minutes! Did it really take them 25 minutes just to notice? Or was that when the first customer complained, power cycled his NTD, waited for the electrons to drain out, powered on and confirmed that the ODU LED was still red?

Whether the current government wants it or not, the NBN is a government-run company. Even if they weren't, they should be subject to minimum service requirements. Since connecting to the NBN 22½ months ago, I have had 175 outages, totalling nearly a week of downtime, one every 3½ days. Why is nobody else getting up on his hind feet and shouting it from the rooftops?


Finally: the shoe cabinet
Topic: general Link here

Finished assembling the shoe cabinet today:


https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20151028/big/Shoe-cabinet.jpeg
Image title: Shoe cabinet          Dimensions:          3456 x 4626, 2000 kB
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The instructions are really appalling. The images show a different sequence from the text, and both are sub-optimal: they require you to place things in front of screw holes before inserting the screws, and in the end I had to leave two screws out of each drawer; fortunately they don't make much difference. And when I finally came to insert the top drawer, I discovered that I had guessed wrong about the orientation of the slide, and I could no longer screw it to the drawer. A different bolt will solve that problem, but what a pain!

On the positive side, there's a surprising amount of space in there.


Griasde!
Topic: language, opinion Link here

Strange message from Wikipedia today. After unpacking (you wouldn't want to send this in plain text, would you?):

Griasde in da boarischn Wikipedia! Wannsd a Frog zua an Woat host, schaug do: Mia fäid a Woat. Wannsd a Frog zua boarischn Wikipedia bzw. zum Midmocha hosd, nacha kimm ins Autornkafää.

The funny thing is, I understand it. It's Bavarian, a language of which they say:

Schon gewusst? Bairisch ist älter als Hochdeutsch

→ Während die deutsche Schriftsprache erst im 15./16. Jh. entstanden ist, finden sich die ältesten altbairischen Texte schon im 8. Jahrhundert.

That's nonsense, of course, as the page above shows:

Boarisch (Bairisch) is a Sproch im Siidostn vom deitschn Sprochraum. Zamma mitm Alemannischn, Sidfränkischn und Ostfränkischn buidns de obadeitschn Sprochn.

Elsewhere a panel shows that Obadeitsch is a subclassification of Hochdeitsch.

For people who don't speak the languages (including the Saubreissn, of course): the quote claims that Bavarian is older than High German. That only makes sense if you confuse “High German” with Standard German, since Bavarian is one of the High German dialects.

The biggest puzzle, though, is why I got this message. Surely I've never changed anything in the Bavarian Wikipedia: I can barely understand it.


Wednesday, 28 October 2015 Dereel Images for 28 October 2015
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Returning financial documents
Topic: general Link here

From time to time we have large quantities of financial documents to sign and send back to the accountants. They thoughtfully enclose an envelope to put them in. But clearly there's some down-sizing going on:


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Overweight dogs
Topic: animals, multimedia, opinion Link here

Our dogs are fatter than they should be. Clear solution: less food. But by chance there's a series on TV at the moment:

This episode explores why our dogs are getting fatter and investigate what can be done to help them.

Isn't that obvious? But we took a look at the episode anyway. As I had feared, it's one of the worst of British “documentaries”. Instead of just feeding the dog less, he places hidden cameras around the place to find where he is being fed. Wow!

Keeping animals is a serious responsibility. This kind of film is irresponsible. Why do they produce them?


Big name cameras: breaking with tradition
Topic: photography, opinion Link here

My interest in photography goes back a little over 50 years. Things have changed a lot since then. In those days, the best cameras in the world came from Germany, and there was an up-and-coming production from Japan. Now the best cameras come from Japan, and the cheaper models come from China and Korea. The German camera is as good as dead.

Almost only Leica (now called “Leica Camera”, forgetting that “Leica” was a contraction of “Leitz Camera”) is still there, and due to a masterpiece of marketing is still building its own cameras. I browsed their web site today. If their cameras were as bad as the site, they'd be broke in no time. Apart from the fact that they refuse to display in German, and their markup is completely broken, they don't describe their products. From one of their emetic drop-down menus, I discover they have 7 different product lines, LEICA (yes, they're all shouted) S, SL, M, Q, T, X and COMPACT CAMERAS. What are the first 6? I know the M, but that too is coincidence. It seems the only way to find out is to follow all the links.

Following LEICA S, I'm given Yet Another menu. OK, ABOUT THE S-SYSTEM sounds good.

The Leica S-System was conceived from the ground up as a purely digital camera system and was built with the precise needs of professional photographers in mind.

OK, sounds like Olympus. But with some difficulty I discover it's a medium-format camera. What's that? 6×6? From the inventor of 35 mm photography? Since the demise of Rollei, that's now Hasselblad territory.

Give up and ask Wikipedia. It's a 30×45 mm sensor, only ⅜ of the size of conventional “medium format”. But it's still over 50% larger than the traditional Leica “sensor” size of 24×36 mm. Why are they being untrue to their origins?

One reason, of course, is niche-carving. A Leica M9 body sells for round $6,000 US. And what does it offer for that that Yvonne's Olympus OM-D E-PM2 (cost $300) doesn't? Full frame sensor with 18.5 MP, compared to Micro Four Thirds sensor with only 16 MP. ISO range (linear) 50 to 2500, compared to 200 to 25,000 for the E-PM2. No autofocus. Low resolution LCD display. 32 s to 1/4000 s shutter speed for the M9, 60 s to 1/4000 s shutter speed for the E-PM2. By contrast, my Olympus OM-D E-M1 has a shortest speed of 1/8000, soon to be 1/16000).

What else? It's hard to say, since Leica's web site is so impenetrable, but it seems that the M9 is also other things. No mention of image stabilization, face detection, bracketing modes, or even raw images (though surely that must be possible). Video? Forget it? Continuous shooting mode? If it has one, they're not telling. But how can a camera like that cost over 20 times as much as one which can do more? As I said, a masterpiece of marketing.

As if that wasn't enough, today I got a special offer: a Hasselblad HV for only $3,995 US, with lens. That's only a third of the list price. But further research shows that it's a 35mm form factor (“full frame”). And even more shows that it's really a rebadged Sony Alpha 99, which is still a bit cheaper.

Somehow the world has gone crazy. How much longer are companies like Leica and Hasselblad going to be around? No doubt that they produce high-quality products, but at those prices?


Wildflowers in the wild
Topic: gardening Link here

A couple of days ago I took some macro photos of plants I picked on the wayside. Here they are in their natural habitat (well, where I found them, anyway):

This one is tiny and prostrate. The plant is about 2-3 cm off the ground, and the flowers are about 5 mm across:


https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20151026/big/Mystery-1-4.jpeg
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Image title: Wildflower 1 2          Dimensions:          4608 x 3458, 4320 kB
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And this one is a climbing bush, about 60 cm high. The flowers are about 1 cm across:


https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20151026/big/Mystery-2-4.jpeg
Image title: Mystery 2 4          Dimensions:          4624 x 3456, 1168 kB
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https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20151028/big/Wildflower-2-2.jpeg
Image title: Wildflower 2 2          Dimensions:          4608 x 3456, 2944 kB
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https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20151028/big/Wildflower-2-1.jpeg
Image title: Wildflower 2 1          Dimensions:          4609 x 3456, 4800 kB
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Thursday, 29 October 2015 Dereel
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Goodbye Michael Ködderitzsch
Topic: general Link here

Sad news today: my brother-in-law and Yvonne's brother Michael Ködderitzsch died of a heart attack on Sunday, at the age of only 60. It's been 11 years since I last saw him, and I had hoped that one day he might come and visit us here. That's the end of that idea.


Leica revisited
Topic: photography, opinion Link here

After writing yesterday's article on big name cameras, I discovered that the Leica that I had been comparing yesterday was not the latest model. Things are clear, right? Leica's M series started with the M3, then came the M2, then for some reason they incremented all the way to M9. And then? M, of course. And that's still the current camera.

But not for long. By complete coincidence, Digital Photography Review released an “in-depth” review of a Leica SL today. What's that? A new version of the S? No. An upgraded version of this camera? Clearly not. It's their “first full-frame mirrorless camera”. I thought that was the M, but it seems that it still only uses the rangefinder.

The “review” proves to be a “first impressions”, and apart from finding the sensor to be inferior, didn't really say very much. But I found some specs (titled “full specs”) in the British Journal of Photography. Here's a comparison, using what specs I have available, and which may be inaccurate, between the M, SL and our two cameras:

Feature       M       SL       E-PM2       E-M1
Focal length range (35 mm equiv)       16-135       24-90       14-600       14-600
Focus       manual       49 points       35 points       81 points
Sensor size       23.9×35.8 mm       23.9×35.8 mm       17.3×13.0 mm       17.3×13.0 mm
Resolution       5952×3968       6000×4000       4608×3456       4608×3456
Bit depth             14       12       12
Shutter speeds       60-1/4000       60-1/8000       60-1/4000       60-1/8000 (1/16000)
Flash sync       1/180 s       1/250 s       1/250 s       1/320 s
Sensitivity range (ISO linear)       200-6400       50-50,000       200-25,000       200-25,000
Meter modes       A, M       P, A, S, M       Auto, P, A, S, M       Auto, P, A, S, M
Sequential shooting (/s)       3       10       8       10
Video       1080p?       4K       1080p       1080p
Sound       mono       stereo       stereo       stereo
Exposure metering       stopped down             open       open
Viewfinder       optical rangefinder             LCD screen       LCD screen, digital viewfinder
Viewfinder magnification       68%       80%             100%
Price       $6,250       $7,200       $299       $1,200
The prices were added a year later. The prices for the Leicas were the lowest I could find with Staticice. The price for the E-PM2 included the lens. The price for the E-M1 is guesswork based on the price I paid for the camera with lens. All prices are in Australian dollars.

The SL really does have some advantages over our camera: higher sensitivity (if you believe it, given the first impressions that don't like the performance even at 39°/6400 ISO) and higher resolution video (something at which our cameras are not particularly good). Some claim a faster sequential shooting rate of 11 fps, but the instruction manual says 10, like my E-M1.

Like the E-M1, it has what they call WLAN. It's not clear exactly how it works, but it's conceivable that in Client mode it's really just another member of a LAN. Hopefully other manufacturers will take note.

The SL currently costs $7,450, though it's not available yet. Is it worth that much? Of course not. But it shows significant improvements compared to the two predecessors. I wonder what they're going to do about long focal length lenses.


Understanding C++
Topic: technology, opinion Link here

So I have this problem with Hugin where I run into ambiguous templates:

[ 45%] Building CXX object src/tools/CMakeFiles/autooptimiser.dir/autooptimiser.cpp.o
/eureka/home/src/FreeBSD/svn/ports/graphics/hugin-2015.0.0/work/hugin-2015.0.0/src/tools/align_image_stack.cpp:196:38: error: reference to 'lock' is ambiguous
            hugin_omp::ScopedLock sl(lock);
                                     ^
/eureka/home/src/FreeBSD/svn/ports/graphics/hugin-2015.0.0/work/hugin-2015.0.0/src/tools/align_image_stack.cpp:124:24: note: candidate found by name lookup is 'lock'
static hugin_omp::Lock lock;
                       ^
/usr/include/c++/v1/mutex:424:1: note: candidate found by name lookup is 'std::__1::lock'
lock(_L0& __l0, _L1& __l1, _L2& __l2, _L3& ...__l3)
^
/usr/include/c++/v1/mutex:350:1: note: candidate found by name lookup is 'std::__1::lock'
lock(_L0& __l0, _L1& __l1)
^

I've already established that the candidates are templates, and v1/mutex is unconditionally included with fstream. But why is it biting me here? More analysis of the 10 MB of vomit that the preprocessor created from align_image_stack.cpp. There are two references to lock in the file. At line 124 we have a definition:

static hugin_omp::Lock lock;

What's hugin_omp? It's defined in src/hugin_base/hugin_utils/openmp_lock.h, and it's a namespace. Lock is a class, and it has a creator function:

    Lock()       {omp_init_lock(&m_lock);}

There's also another class in the namespace, ScopedLock, with the creator function:

    ScopedLock(Lock& lock):m_lock(lock) {m_lock.Set();}

And that's what's invoked at line 196:

        {
            hugin_omp::ScopedLock sl(lock);
            pano.addCtrlPoint(p);
        };

So this is a couple of classes inside their own namespace. But the compiler is complaining about the token lock. Change it to slock and it's happy.

Is this correct behaviour? We discussed it on IRC, and Callum Gibson came up with this page. After reading that, my eyes went funny. I'll have to try again, maybe with a simpler example

Somehow C++ is too painful.


my.gov pain
Topic: general, technology, opinion Link here

A message in the mail today:

Date: Thu, 29 Oct 2015 12:09:33 +1100
From:<centrelink.email.delivery@centrelink.gov.au>
To: <groggyhimself@lemis.com>
Subject: New Centrelink letter available online
Reply-To: centrelink.email.delivery@centrelink.gov.au

Please DO NOT REPLY by email as this mailbox is not monitored.

OK, I have a my.gov account. But what a pain it is to use! I've been there before and came to the conclusion that the “service” wasn't worth the ether it was printed on. On that occasion I was unable to turn off email because of technical problems (broken DNS lookup). Today the DNS lookup worked, but other technical problems stopped me: there's no provision for removing yourself. Finally worked my way through the FAQs (for security or leetness reasons we only show one entry at a time) to a real live person, who did it for me with no further identification than my name, address, date of birth and Centrelink number. But for security reasons they can't just let me look at the stuff online, even after logging in. Ugh.


Subversion subverted
Topic: technology, opinion Link here

I maintain a couple of copies of the FreeBSD source tree (CURRENT and STABLE) on eureka. Every morning I run svn update to bring them up to date. Lately, however, I've been having build failures with STABLE. That can happen, of course, though it's not supposed to, but this had been continuing for several days, and nobody had complained on the mailing lists.

Where's the problem? Tried building on another machine (lagoon instead of stable), but the problem remained. Finally I checked out a complete new STABLE tree and tried that. It built.

So do I have a corrupt source tree? That's what svn up is supposed to avoid, isn't it? Ran a diff against it. Here /src/FreeBSD/svn/10 is the new tree, and /src/FreeBSD/svn/stable/10 is the old tree.

It showed an amazing number of differences, so many that the resultant output (which I had sent to myself with mail) exceeded the maximum message size.

=== grog@eureka (/dev/pts/9) /src/FreeBSD/svn/10 6 -> mailme diff -wur . ../stable/10
postdrop: warning: uid=1004: File too large
send-mail: fatal: grog(1004): message file too big

OK, do it again:

=== grog@eureka (/dev/pts/9) /src/FreeBSD/svn/10 7 -> diff -wur . ../stable/10 > /var/tmp/svndiffs
=== grog@eureka (/dev/pts/9) /src/FreeBSD/svn/10 8 -> l /var/tmp/svndiffs
-rw-r--r--  1 grog  wheel  76,911,701 29 Oct 09:59 /var/tmp/svndiffs

That's nothing new. The new file is over 5 years old! How did that happen? In total there were over 70 MB of diffs between source trees that should be identical! What's the real story? At the beginning of the file there were 28,121 entries like:

Only in ../stable/10/.svn/pristine/ff: fffc5dc4030e376cc48fb6e6b948aafd9fb9bac3.svn-base

OK, arguably hashing is different, but then there should have been a corresponding number of non-matching files in /src/FreeBSD/svn/10. I didn't find any.

And then there were lots of files like this:

- * $FreeBSD: stable/10/cddl/compat/opensolaris/include/unistd.h 174035 2007-11-28 21:40:07Z jb $
+ * $FreeBSD: stable/10/cddl/compat/opensolaris/include/unistd.h 177698 2008-03-28 22:16:18Z jb $
=== grog@eureka (/dev/pts/9) /src/FreeBSD/svn/10 9 -> du -s . ../stable/10
2059    .
2976    ../stable/10

John Marshall tells me that this is to be expected, and that you should run svn cleanup from time to time. An easier way would be just a clean checkout, but I want to understand how this corruption can occur, so I'll try that once I've got my head around the issues.


Friday, 30 October 2015 Dereel
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Whole country panorama
Topic: photography Link here

Spent some time looking for photos of Michael Ködderitzsch. It seems that the last time we saw him we didn't take any photos; we were mainly taking video in those days, and I haven't got round to checking what we have there. But I found the other photos I took of that trip, and put them through my current processing, which made a big difference:


https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20041016/big/st-johann-1-orig.jpeg
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The most interesting thing, though, was a series of photos I took from the Berghüsli overlooking Buchs SG. They proved to fit together nicely as a panorama:


https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20041017/big/view-from-berghuesli.jpeg
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The interesting thing about this panorama is that it shows an entire country. We're looking east across the Rhine, and on the other side is the principality of Liechtenstein, all 160 km² of it. The castle in Vaduz is visible, but it's easier to recognize from this perspective, in the upper middle of the open side of the window:


https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20041017/big/view-from-berghuesli-6.jpeg
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Unfortunately the resolution of the camera (Nikon “Coolpix” 880, 2048×1536) left most of the details behind.

This isn't the first time I have discovered that I can make a panorama from photos that weren't taken for that purpose. I wonder how many more there are.


Darktable revisited
Topic: technology, photography, opinion Link here

I suspect Andy Snow is planning some photographic activity. Today he asked me on IRC about darktable. Yes, I've tried it in the past, but never got very far with it. The concept of ”film rolls” and other silliness put me off.

Time to try it again? Why not?

=== root@stable (/dev/pts/0) ~ 7 -> pkg install darktable
Installed packages to be REMOVED:
        hugin-2013.0.0_7
New packages to be INSTALLED:
        darktable: 1.6.8_1
        flickcurl: 1.26

Huh? Why does it want to remove Hugin? Tried building it from source, and that worked. The interface is strange, to say the least, but it does seem to have a lot of functionality, and the film rolls are gone. According to the Wikipedia page, the version I tried 4½ years ago must have been the very first version, and they've been through several major releases since then.

Still, I haven't heard much of it lately, while a few weeks back I confirmed that RawTherapee produces surprisingly good results. Told Andy so, and he tried it out. He used to use Bibble, and apparently the interfaces are similar. So it looks as if darktable misses out.


Saturday, 31 October 2015 Dereel Images for 31 October 2015
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Laddie go home!
Topic: animals Link here

Rain this morning, something that's been rare lately—in the last 5 weeks we had a total of 1.4 mm of rain—and we found the dogs running around outside in the wet, barking at a dog on the other side of the fence. That proved to be the same Border Collie that we saw last week, and after a while he came on to the property, dogs running everywhere.

We brought our dogs in, but the other didn't go away: he just sat in front of our door and waited. After a couple of hours, we considered what we knew of him: I had first seen him in Progress Road, and Shaun from next door had told Yvonne that on another occasion his owner had come to collect him from that direction. So we put a lead on him and let him take him home. Sure enough, he headed straight up Progress Road, and we were halfway to the McClellands when a car came by. Yvonne stopped him, but that was probably not necessary: he was the owner. Yes, they live up on the right hand side a couple of hundred metres further on. We now have the contact details. The dog is called Cody.

In the afternoon a car drove past and called to me, looking for a dog. It proved to be the wife of the family, and he had escaped again. While we were talking he came running up to us, so that issue is over and done with. Somehow I have the feeling that we haven't seen the last of him.


Finishing the Hugin port
Topic: technology, photography, opinion Link here

More work on the Hugin port today, and finally got it finished. Well, almost.

===>   Registering installation for hugin-2015.0.0_1

And it hung. Not network efficient, maybe? Came back some time later and it was still running:

USER   PID %CPU %MEM   VSZ  RSS TT  STAT STARTED     TIME COMMAND
root 58647 99.3  0.1 13448 5360  0  R+   12:26pm 18:27.89 /usr/local/sbin/pkg-static register -i /eureka/home/src/FreeBSD/svn/ports/graphics/hugin-2015.0.0/work/stage -m /eureka/home/src/FreeBSD/svn/ports/graphics/hugin-2015.0.0/work/.metadir -f /eureka/home/src/FreeBSD/svn/ports/graphics/hugin-2015.0.0/work/.PLIST.mktmp

It shouldn't take that long. Set a ktrace on it and found it looping:

 58647 pkg-static RET   read -1 errno 21 Is a directory
 58647 pkg-static CALL  read(0x4,0x7fffffff9b10,0x2000)
 58647 pkg-static RET   read -1 errno 21 Is a directory
 58647 pkg-static CALL  read(0x4,0x7fffffff9b10,0x2000)

Some programs just won't take “no” for an answer. Further investigation revealed that I had put a directory name in pkg-plist, and that's fatal. It's also a pain, since it's not immediately obvious from the names that a pathname might represent a directory, and since the names are parameterized, I can't just put it through a shell script to run ls on it.. It took me about 4 attempts to get rid of them all, each time running ktrace to find out how far it got. Now to fix pkg.


New Hugin: first experiences
Topic: technology, photography, opinion Link here

OK, Hugin has changed a lot in 3 years, not all for the better. I've already noted that the highlighting of individual images in the fast panorama preview went away, and that's one of the main reasons I'm still running an old version of Hugin. But today I had issues that I hadn't expected: I couldn't stitch at all.

The interface has changed soeewhat, but the principle is the same. Use the “Assistant” tab, load the images, and let it align.

But this time it didn't work:

 
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OK, go to the Control Points tab. No way to create the control points there. The button is in the Photos tab. Go there, run Create Control Points. What do I get?


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OK, I have control points, but look how far apart they are! All the images are on top of each other.

Did a lot of messing around, and established:

This is something so basic that I'm completely baffled. Sent a message out to the Hugin list. Tomorrow I should have some response.


More panorama issues
Topic: photography, opinion Link here

While thinking about macro photography last week it occurred to me that I didn't really need a two-way macro rail on my panorama head. There's already another one underneath it, and it's too long anyway, so all I need to do is remove it:


https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20151101/big/Panorama-hardware-4.jpeg
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Tried that today, and discovered why it was there. All the photos looked like this:


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That's the side of the panorama bracket on the left. The problem is that without the second lateral rail, the camera comes much closer to the side arm of the bracket. Here before and after:


https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20151101/big/Panorama-hardware-4.jpeg
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https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20151101/big/Panorama-hardware-8.jpeg
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https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20151101/big/Panorama-hardware-13.jpeg
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In addition, without the additional height of the second rail, the lens fouls the axial rail:


https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20151101/big/Panorama-hardware-5.jpeg
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https://lemis.nyc3.digitaloceanspaces.com/grog/Photos/20151101/big/Panorama-hardware-10.jpeg
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So it's back to the old way for the time being; maybe I should be on the lookout for a new, larger panorama bracket, especially if I want to use it for macros too.


Hosting an NBN fixed wireless tower
Topic: technology, opinion Link here

Call from somebody today who was in negotiation with the National Broadband Network to have a fixed wireless tower put on her property. It looks like a good idea for her: they pay $10,000 per year, and the area where it would go isn't much use for anything else.

She has already given the contract to her solicitor to look at, but she's concerned about liability insurance. Surely the NBN would handle that? I'm puzzled. I think her biggest issue might be community backlash: she says that all the community is against the tower. But that doesn't make sense: why would the NBN want to erect a tower where nobody's interested? I suspect that, like in Dereel, it's the vocal minority that people notice at this stage. Certainly here there has been no noise since Wendy lost her appeal to VCAT 2½ years ago.


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