wind

let current wind dance as moving streamlines on desktop background

1. download & decode wind data

the lua script wind_decode.lua downloads recent wind as json from noaa (not yet), imports and decodes it and write to csv, to be analysed by octave script wind_thread.m.

lua wind_decode.lua

2. calculate streamlines

the octave script wind_thread.m imports recent wind data from wind.csv generated in (1), calculates some 10k streamlines from random positions and saves them, seperated by "0 0" lines, as streamlines.dat to be read by conkys lua script (3).

octave wind_thread.m

3. draw

the lua script wind_weave.lua imports the streamlines from streamlines.dat, and draws them using conkys cairo backend via wind_blow.lua. This script is run automatically by (4), but has to be changed to adjust opacity, linecolor, etc.

4. start conky

conky config script to load lua script wind_weave.lua, which prints the wind streamlines in streamlines.dat:

conky -c ~/wind/wind_blow.lua

todo

• shell script: (1) and (2) need to be run once every time the noaa updates the wind data.