hour-by-hour terminal forecast in Go with official IMGW warnings for Polish locations, no API key, no dependencies https://git.labunix.xyz/prognosis.git/atom?h=main 2026-08-27T06:49:38Z 2026-08-27T06:49:38Z Lukasz Kasprzak lukas@labunix.xyz 2026-08-27T06:49:38Z urn:sha1:83a2eaef9853194093a457b0ab65fc231acce23f -svg renders the forecast as a standalone SVG: temperature with the apparent temperature dashed, precipitation as bars with the probability on its own right-hand axis, and humidity, over shaded night bands with a rule at each midnight. The rain panel carries two units, so the probability gets a second axis; read against millimetres a 60% chance looks like 0.6 mm. Written as markup rather than through gnuplot or a plotting library, so it needs nothing installed and works wherever the binary does -- the phone included. Axis ticks are snapped to round values and the number of gridlines follows the step, since snapping only the ends still yields 12.5 and 27.5. An hour label that would land under a bold date is dropped, or "23" and "28.08" render on top of each other. -o and -out choose the destination, for the table as much as the meteogram. A directory gets a filename made from the place and the date, so a daily run does not overwrite yesterday; a bare name gains the extension, so nothing lands as a file no viewer will open. Colour is omitted when writing to a file. The place is transliterated rather than stripped, so Zbylitowska Gora keeps its vowels. Documented which viewers accept a pipe: feh - and chafa do, nsxiv does not and answers with its usage, which hides the cause. The earlier claim that ImageMagick renders these files wrong was too broad -- that is convert falling back to its own renderer; display delegates to rsvg-convert and is fine. 2026-08-25T13:42:55Z Lukasz Kasprzak lukas@labunix.xyz 2026-08-25T13:42:55Z urn:sha1:92e1106b91f836339a957312a1ea4449c55114c7 prognosis no longer reads ~/.wegorc. Falling back to another program's configuration made it useless without wego installed, and hid the fact that it has no way to know where you are: location= is now required in its own config, and the error says so and shows how to set it. Custom columns. Any field the two Open-Meteo APIs expose can be displayed by declaring it -- column.birch = air:birch_pollen -- and then naming it in columns=. The source is explicit because forecast and air-quality are separate services with separate fields; an air column costs one extra request, made only when one is declared. Air values merge onto forecast hours by timestamp rather than array index, since nothing guarantees the two endpoints start at the same hour and merging by position would shift a column by an hour unnoticed. A value the API withholds renders blank, not zero: for an allergen those are different claims. Pollen selection no longer privileges grass. A species named in pollen= is shown even at zero, because you named it for a reason; pollen=all shows only what is present, or the line is six zeroes. Grass had been special-cased, which forced it on someone allergic to birch while hiding theirs. Temperature colours are compared in Celsius whatever the display units. In imperial, 85F -- a mild 29C -- was rendering in the red that means IMGW would issue a heat warning. A man page, checked by make lint and installed by make install. The Makefile gains PREFIX/DESTDIR for packaging, a version stamped into the binary, a release target that refuses to tag a dirty tree or a version with no changelog entry, cross-compilation for six platforms, and a pre-push hook. Also: humidity in the default columns, -weather for output meant for someone else, -ascii so an SMS stays in GSM-7 rather than dropping to 70-character UCS-2 segments, and -pollen and -version.