Greg
animals brewing
food and drink gardening
general health
history language
music multimedia
opinion photography
politics Stones Road house
technology
Greg's diary
recent entries
Translate this page
Select day in August 2017:
Su Mo Tu We Th Fr Sa
1 2 3 4 5
6 7 8 9 10 11 12
13 14 15 16 17 18 19
20 21 22 23 24 25 26
27 28 29 30 31
Select month:
2016 Sep Oct Nov Dec
2017 Jan Feb Mar Apr
2017 May Jun Jul Aug
Today's diary entry
Diary index
About this diary
Greg's home page
Greg's photos
Network link stats
Greg's other links
Copyright information
    
Groogle

Friday, 18 August 2017 Dereel Images for 18 August 2017
Top of page
next day
last day

Goodbye, Di
Topic: general Link here

Di Saunders left today in some of the worst weather we have seen for some time. When I got up, the whole front of the house was overflowing:


This should be Flooding-1.jpeg.  Is it missing?
Image title: Flooding 1          Dimensions:          5229 x 3888, 6974 kB
Make a single page with this image Hide this image
Make this image a thumbnail Make thumbnails of all images on this page
Make this image small again Display small version of all images on this page
All images taken on Friday, 18 August 2017, thumbnails          All images taken on Friday, 18 August 2017, small
Diary entry for Friday, 18 August 2017 Complete exposure details

 
This should be Flooding-2.jpeg.  Is it missing?
Image title: Flooding 2          Dimensions:          5229 x 3888, 5672 kB
Make a single page with this image Hide this image
Make this image a thumbnail Make thumbnails of all images on this page
Make this image small again Display small version of all images on this page
All images taken on Friday, 18 August 2017, thumbnails          All images taken on Friday, 18 August 2017, small
Diary entry for Friday, 18 August 2017 Complete exposure details

 

We had a total of 18.8 mm of rain, and in the course of the morning I had to pump out the sump about 15 times. High time to get the automatic switch to work reliably.

The GPS navigator had actually managed to fully charge, and was well prepared to take her home via (coincidentally?) the optimum route. She called back at 18:36 to confirm that she had made it home.


Goodbye, Sasha
Topic: animals Link here

The two weeks trial period are nearly up, and Yvonne heard from Melanie Bahlo: yes, they're very happy with Sasha, and they'll keep him. We had expected as much, of course, but now it's final. We'll miss him.


Centrelink does it again... and again
Topic: general, opinion Link here

Last month we received a request (in duplicate, because there are two of us) from Centrelink, the obviously named government agency which pays our pensions: please provide information about your German pensions. OK, that's valid, but why couldn't they ask the Germans? We sent off the documents as requested, after finding a place to get photocopies done. Then last week we received another request, with a different title, which I misunderstood and sent to our superannuation people.

Now today we received no less than four letters telling us that our fortnightly pension had dropped by about $2.50, a fraction of the increase we got from the Germans last month. Why four? Two are normal, since they seem incapable of combining mail to Yvonne and me. But the other two were interesting: they stated that they had received information from the Germans on the current value of our pension.

What's wrong with this? What they should have done:

What they did:


Building NetBSD, continued
Topic: technology, opinion Link here

I've received mail from coypu, an email ID without a matching real name (domain removed to avoid spam) about my trouble building NetBSD. He made some suggestions, reminding me that NetBSD has also abandoned the simple build mechanism of the last millennium, and now uses a script called build.sh. One of his build suggestions:

./build.sh -U -u -j 4 -m amd64 -O ~/myobjdir tools
./build.sh -U -u -j 4 -m amd64 -O ~/myobjdir kernel=GENERIC

Problem: it doesn't work for me. RTFM time, which shows that build.sh is required for crossbuilds, and the old make build is still supposed to work. But the documentation concentrates on build.sh, so in the end I used this invocation, based on something I read in the doucmentation:

=== root@kimchi (/dev/pts/1) /usr/src 11 -> ./build.sh -m amd64 build
...
Build started at:  Thu Aug 17 16:24:43 AEST 2017
Build finished at: Thu Aug 17 21:19:23 AEST 2017
===> Successful make build
===> build.sh ended:      Thu Aug 17 21:19:23 AEST 2017
===> Summary of results:
         build.sh command:    ./build.sh -m amd64 build
         build.sh started:    Thu Aug 17 16:24:36 AEST 2017
         NetBSD version:      7.1_STABLE
         MACHINE:             amd64
         MACHINE_ARCH:        x86_64
         Build platform:      NetBSD 7.1 amd64
         HOST_SH:             /bin/sh
         No $TOOLDIR/bin/nbmake, needs building.
         Bootstrapping nbmake
         MAKECONF file:       /etc/mk.conf (File not found)
         TOOLDIR path:        /eureka/home/src/NetBSD/cvs/src/obj/tooldir.NetBSD-7.1-amd64
         DESTDIR path:        /eureka/home/src/NetBSD/cvs/src/obj/destdir.amd64
         RELEASEDIR path:     /eureka/home/src/NetBSD/cvs/src/obj/releasedir
         Created /eureka/home/src/NetBSD/cvs/src/obj/tooldir.NetBSD-7.1-amd64/bin/nbmake
         Updated makewrapper: /eureka/home/src/NetBSD/cvs/src/obj/tooldir.NetBSD-7.1-amd64/bin/nbmake-amd64
         Successful make build
         build.sh ended:      Thu Aug 17 21:19:23 AEST 2017

How do I build the kernel? Again, let me count the ways. Later.


Saturday, 19 August 2017 Dereel Images for 19 August 2017
Top of page
previous day

GPS positioning
Topic: photography, technology, opinion Link here

House photo day again today, and finally I remembered almost everything. I just forgot to adjust the bracket correctly. I think I really need that checklist...

Fortunately I was close enough, and the only photo that didn't work was this one:


This should be house-looking-south-try1.jpeg.  Is it missing?
Image title: house looking south try1          Dimensions:          11569 x 2403, 8279 kB Display location on map
Make a single page with this image Hide this image
Make this image a thumbnail Make thumbnails of all images on this page
Make this image small again Display small version of all images on this page
All images taken on Saturday, 19 August 2017, thumbnails          All images taken on Saturday, 19 August 2017, small
Diary entry for Saturday, 19 August 2017 Complete exposure details

 


This should be house-looking-south-try1-detail.jpeg.  Is it missing?
Image title: house looking south try1 detail          Dimensions:          3165 x 512, 378 kB Display location on map
Make a single page with this image Hide this image
Make this image a thumbnail Make thumbnails of all images on this page
Make this image small again Display small version of all images on this page
All images taken on Saturday, 19 August 2017, thumbnails          All images taken on Saturday, 19 August 2017, small
Diary entry for Saturday, 19 August 2017 Complete exposure details

 

Why that? That wasn't parallax: the cord moved between individual images. With masking I can improve on it, but not completely eliminate it on the left:


This should be house-looking-south-detail.jpeg.  Is it missing?
Image title: house looking south detail          Dimensions:          3689 x 579, 518 kB Display location on map
Make a single page with this image Hide this image
Make this image a thumbnail Make thumbnails of all images on this page
Make this image small again Display small version of all images on this page
All images taken on Saturday, 19 August 2017, thumbnails          All images taken on Saturday, 19 August 2017, small
Diary entry for Saturday, 19 August 2017 Complete exposure details

 

 
This should be house-looking-south-detail-2.jpeg.  Is it missing?
Image title: house looking south detail 2
Display location on map
Complete exposure details
Dimensions: 300 x 225, 64 kB
Dimensions of original: 300 x 225, 64 kB
Display this image:
thumbnail    hidden   alone on page
Display all images on this page as:
thumbnails    this size
Show for Saturday, 19 August 2017:
thumbnails    small images    diary entry

And the GPS locations? Still no go. This time three images all had the same “location”, -37.8002917,143.7513139:


This should be house-from-entrance.jpeg.  Is it missing?
Image title: house from entrance          Dimensions:          11004 x 3238, 8775 kB Display location on map
Make a single page with this image Hide this image
Make this image a thumbnail Make thumbnails of all images on this page
Make this image small again Display small version of all images on this page
All images taken on Saturday, 19 August 2017, thumbnails          All images taken on Saturday, 19 August 2017, small
Diary entry for Saturday, 19 August 2017 Complete exposure details

 
This should be e-from-house.jpeg.  Is it missing?
Image title: e from house          Dimensions:          10850 x 3310, 7156 kB Display location on map
Make a single page with this image Hide this image
Make this image a thumbnail Make thumbnails of all images on this page
Make this image small again Display small version of all images on this page
All images taken on Saturday, 19 August 2017, thumbnails          All images taken on Saturday, 19 August 2017, small
Diary entry for Saturday, 19 August 2017 Complete exposure details

 
This should be house-from-n.jpeg.  Is it missing?
Image title: house from n          Dimensions:          11154 x 3154, 8010 kB Display location on map
Make a single page with this image Hide this image
Make this image a thumbnail Make thumbnails of all images on this page
Make this image small again Display small version of all images on this page
All images taken on Saturday, 19 August 2017, thumbnails          All images taken on Saturday, 19 August 2017, small
Diary entry for Saturday, 19 August 2017 Complete exposure details

 

How could that happen? Some problem with the GPS receiver? OK, I have more than one of them. Let's take some photos with the two GPS/camera combinations, and of the car GPS navigator.

That was one of the most painful things I've done in a while. How do you take a photo of a device with a shiny screen in sunshine? With great difficulty:


This should be GPS-log-1-5.jpeg.  Is it missing?
Image title: GPS log 1 5          Dimensions:          2743 x 1397, 821 kB Display location on map
Make a single page with this image Hide this image
Make this image a thumbnail Make thumbnails of all images on this page
Make this image small again Display small version of all images on this page
All images taken on Saturday, 19 August 2017, thumbnails          All images taken on Saturday, 19 August 2017, small
Diary entry for Saturday, 19 August 2017 Complete exposure details

 
This should be GPS-log-1-6.jpeg.  Is it missing?
Image title: GPS log 1 6          Dimensions:          3264 x 2448, 1047 kB Display location on map
Make a single page with this image Hide this image
Make this image a thumbnail Make thumbnails of all images on this page
Make this image small again Display small version of all images on this page
All images taken on Saturday, 19 August 2017, thumbnails          All images taken on Saturday, 19 August 2017, small
Diary entry for Saturday, 19 August 2017 Complete exposure details

 

It proves that the camera in my ALDI tablet (the subject of the second photo) doesn't save EXIF data, so it was of only marginal use. But here we have three different GPS locations, converted to fractions of degrees:

Device       latitude       longitude
Phone       -37.80015°       143.75152°
Tablet       -37.80017°       143.75157°
Navigator       -37.80018°       143.75156°

The tablet and the navigator are closer to each other than to the phone. But what sort of distances are we looking at here? 1° latitude round here corresponds to round 88 km, so 0.00001° corresponds to about 0.88 m. The difference in latitude is thus about 2.6 m, acceptable enough. Similarly, 1° in longitude corresponds to about 111 km, so the maximum difference of 0.00005° corresponds to about 5.5 m. Not excellent, but an order of magnitude less than the 50 m between the first and the third photo above (the trees on the left in the first photo are also barely visible on the left in the third). So what's the issue? More investigation needed.

In passing, it's interesting to note the coordinates in the EXIF data: they're 7 places of decimals, not 5, so they correspond to about 8.8 mm and 1.11 mm. That's so far beyond the accuracy of the devices that it's not even a joke.


Hainault chicken rice
Topic: food and drink, opinion Link here

We've been planning to cook Hainan chicken rice (clearly a dish from Singapore) for some time now, but I'm still working on the details of this very simple dish. In the meantime, Yvonne decided to cook poule au riz instead. What's that? Pretty much the same dish, chicken with rice. But instead of Chinese flavourings, they're French. This will become the recipe page.


Half full or half empty?
Topic: general Link here

After dinner this evening, I offered Chris (Bahlo) some more wine. Half a glass, she said. I started pouring, and she said no, that's more than half.

It's difficult to know where the halfway mark is in a spherical glass, so how about measuring it. How about that, it is less than I thought:


This should be Half-full-3.jpeg.  Is it missing?
Image title: Half full 3          Dimensions:          5184 x 3888, 3012 kB
Make a single page with this image Hide this image
Make this image a thumbnail Make thumbnails of all images on this page
Make this image small again Display small version of all images on this page
All images taken on Saturday, 19 August 2017, thumbnails          All images taken on Saturday, 19 August 2017, small
Diary entry for Saturday, 19 August 2017 Complete exposure details

 

That's water. The glass on the right has 206 g of water, the one on the left has 103 g. At least I now know.


Image stabilization when it's needed
Topic: photography, opinion Link here

The photo of the water glasses wasn't the first I took. I took them with available light, camera sensitivity set to 24°/200 ISO, and the camera was set to aperture priority, f/8. Result: 2.5 s exposure time.


This should be Half-full-1.jpeg.  Is it missing?
Image title: Half full 1          Dimensions:          5189 x 3888, 3320 kB
Make a single page with this image Hide this image
Make this image a thumbnail Make thumbnails of all images on this page
Make this image small again Display small version of all images on this page
All images taken on Saturday, 19 August 2017, thumbnails          All images taken on Saturday, 19 August 2017, small
Diary entry for Saturday, 19 August 2017 Complete exposure details

 

Not much to be seen there of the superb image stabilization of the Olympus OM-D E-M1 Mark II. Admittedly I hadn't been expecting it, but how well can I do in P mode? ½ s, f/3.8:


This should be Half-full-2.jpeg.  Is it missing?
Image title: Half full 2          Dimensions:          5194 x 3888, 3422 kB
Make a single page with this image Hide this image
Make this image a thumbnail Make thumbnails of all images on this page
Make this image small again Display small version of all images on this page
All images taken on Saturday, 19 August 2017, thumbnails          All images taken on Saturday, 19 August 2017, small
Diary entry for Saturday, 19 August 2017 Complete exposure details

 

On the face of it, that looks OK. But comparing it with the final image, there is still marginal camera shake, as the reflections show:

 
This should be Half-full-2-detail.jpeg.  Is it missing?
Image title: Half full 2 detail
Complete exposure details
Dimensions: 300 x 225, 51 kB
Dimensions of original: 300 x 225, 51 kB
Display this image:
thumbnail    hidden   alone on page
Display all images on this page as:
thumbnails    this size
Show for Saturday, 19 August 2017:
thumbnails    small images    diary entry
 
This should be Half-full-3-detail.jpeg.  Is it missing?
Image title: Half full 3 detail
Complete exposure details
Dimensions: 300 x 225, 52 kB
Dimensions of original: 300 x 225, 52 kB
Display this image:
thumbnail    hidden   alone on page
Display all images on this page as:
thumbnails    this size
Show for Saturday, 19 August 2017:
thumbnails    small images    diary entry

Until proof of the contrary, I'll assume that the unsharpness of the second image is due to focus.


Measuring temperatues
Topic: general, opinion Link here

Since I have digital thermometers, I've had great difficulty getting consistent readings. There are at least three explanations, all of which can be responsible:

Tonight the Bureau of Meteorology forecast a “severe frost”, -3°, something that would make our friends in Germany laugh: there -10° are normal at some point in winter. But by the time Chris Bahlo left, the outside temperature reported by the weather station was round +1°, and Chris expected to find frost on her car.

She was right. Out with the infrared thermometer, which registered temperatures varying from -3° to an extreme of -11° on the roof of her car. I think that's the lowest temperature I have ever measured in Australia.


This page contains (roughly) yesterday's and today's entries. I have a horror of reverse chronological documents, so all my diary entries are chronological. This page normally contains the last two days, but if I fall behind it may contain more. You can find older entries in the archive. Note that I often update a diary entry a day or two after I write it.     Do you have a comment about something I have written? This is a diary, not a “blog”, and there is deliberately no provision for directly adding comments. But I welcome feedback and try to reply to all messages I receive. See the diary overview for more details. If you do send me a message relating to something I have written, please indicate whether you'd prefer me not to mention your name. Otherwise I'll assume that it's OK to do so.


Greg's home page This month Greg's photos Greg's links

RSS 2.0 Valid XHTML 1.0!