12 Sep
2020
12 Sep
'20
7:14 a.m.
On Thu, 10 Sep 2020, Trent W. Buck wrote:
One of the good folk of Debian Australia (I think it
was Paul Wise)
spotted that they now have a rain radar using OSM:
https://weather.bom.gov.au/location/r1r0fsn-melbourne
You need to enable first-party javascript to get ANY of content, not
just the map, but it's a lot closer to the old m.bom.gov.au than
anything else.
Also doesn't work in PrinceXML :-(
$ prince-browser --javascript https://weather.bom.gov.au/
prince: https://weather.bom.gov.au/:1: error: unexpected token
reserved("const")
prince: https://weather.bom.gov.au/static/js/vendors~main.4319003d.chunk.js:1: error:
unexpected token identifier("patches")
prince: https://weather.bom.gov.au/static/js/main.9384b51b.chunk.js:1: error:
unexpected token identifier("fetchParameters")
Management are pretty keen to get rid of everything that works on the old
website too.
I was slightly annoyed how it took 1 second to download all the gifs on my
50mbit/s connection, so I discovered that debian's `puf` has a largely
wget compatible syntax (and I didn't have to work out how to fork off
dozens of python subprocesses and wait for them all). Now gm is by far
the slowest invocation:
diff -u -b -r1.3 radar
--- radar 12 Sep 2020 06:55:46 -0000 1.3
+++ radar 12 Sep 2020 07:06:14 -0000
@@ -28,15 +28,14 @@
underlays = ('background', 'locations', 'range',
'topography')
-with tempfile.TemporaryDirectory() as tempdir_str:
+with tempfile.TemporaryDirectory(prefix="radar.") as tempdir_str:
tempdir_path = pathlib.Path(tempdir_str)
now = datetime.datetime.utcnow() # NOTE: TZ=UTC
# Truncate to start of hour to kludge over with propagation delays on the bom.gov.au
servers
# This means the data will be up to 1h delayed, so FIXME.
# now = now.replace(minute=0)
subprocess.call([
- 'wget', '-nv', '-P', tempdir_path,
- '--',
+ 'puf', '-P', tempdir_path,
# Try to get a rain image for every minute in the last hour.
# 1 in every 6 will work. For now, just ignore that some fail.
# FIXME: this is VERY VERY VERY slow to download.
Funny thing about today's 95% chance 20-40mm forecast: 95% refers to the
chance of it raining more than 0.2mm (from memory), with 50% (from memory)
chance of it falling between 20-40mm. Those of us north of the wet bit
got our 1mm. Those of you in the south appear to have gotten your 20mm.
And the Bureau were technically correct - the best form of correct!
--
Tim Connors