Meteorology: Difference between revisions

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* [[IconSymbols#Weather_symbols|Weather symbols]] to use with GRASS display and cartography modules
* [[IconSymbols#Weather_symbols|Weather symbols]] to use with GRASS display and cartography modules


* Work in progress: {{AddonCmd|d.barb}}: Displays wind barbs or variable length straw diagrams given either two raster maps, or vector point data. Like {{cmd|d.rast.arrow}}, input data is given as magnitude and direction.  (Hamish)
* Work in progress: {{AddonCmd|d.barb}}: Displays wind barbs or variable length straw diagrams given either two raster maps, or vector point data. Like {{cmd|d.rast.arrow}}, input data is given as magnitude and direction, unlike ''d.rast.arrow'' you can also feed it u,v component data.  (Hamish)


[[Image:D_rast_arrow_magnitude.png|thumb|right|200px|d.rast.arrow at work]]
[[Image:D_rast_arrow_magnitude.png|thumb|right|200px|d.rast.arrow at work]]

Revision as of 05:47, 25 June 2011

Meteorology

GRASS used together with R-stats provides a powerful toolset to analyse meteorological time series and to perform spatio-temporal interpolation.


  • Work in progress: d.barb: Displays wind barbs or variable length straw diagrams given either two raster maps, or vector point data. Like d.rast.arrow, input data is given as magnitude and direction, unlike d.rast.arrow you can also feed it u,v component data. (Hamish)
d.rast.arrow at work
  • r.series - useful for time series analysis of raster data.
  • v.surf.rst - useful for 2D spline interpolation between sparse data points.