Meteorology - Revision history

⚠️Madi at 17:38, 19 July 2015

2015-07-19T17:38:18Z

← Older revision		Revision as of 17:38, 19 July 2015
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	[[Category:Documentation]]		[[Category:Documentation]]
	[[Category:Grib]]		[[Category:Grib]]
	[[Category:Angle ~~Convention~~]]		[[Category:Angle Conventions]]

⚠️Madi at 17:38, 19 July 2015

2015-07-19T17:38:02Z

← Older revision		Revision as of 17:38, 19 July 2015
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	[[Category:Documentation]]		[[Category:Documentation]]
	[[Category:Grib]]		[[Category:Grib]]
			[[Category:Angle Convention]]

⚠️HamishBowman: /* Meteorology */

2014-06-25T11:16:29Z

Meteorology

← Older revision		Revision as of 11:16, 25 June 2014
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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

	* {{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),~~ See also [http://casoilresource.lawr.ucdavis.edu/drupal/node/989 Visualizing Terrain Surface Indicies with Scaled Arrows].		* {{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.
			: See also [http://casoilresource.lawr.ucdavis.edu/drupal/node/989 Visualizing Terrain Surface Indicies with Scaled Arrows].

	* {{cmd\|r.in.gdal}} - useful for importing raster data from [http://www.gdal.org/formats_list.html very many source data formats].		* {{cmd\|r.in.gdal}} - useful for importing raster data from [http://www.gdal.org/formats_list.html very many source data formats].

⚠️HamishBowman: /* Meteorology */

2014-06-25T11:15:29Z

Meteorology

← Older revision		Revision as of 11:15, 25 June 2014
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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, unlike ''d.rast.arrow'' you can also feed it u,v component data. (Hamish), See also [http://casoilresource.lawr.ucdavis.edu/drupal/node/989 Visualizing Terrain Surface Indicies with Scaled Arrows].		* {{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), See also [http://casoilresource.lawr.ucdavis.edu/drupal/node/989 Visualizing Terrain Surface Indicies with Scaled Arrows].

	* {{cmd\|r.in.gdal}} - useful for importing raster data from [http://www.gdal.org/formats_list.html very many source data formats].		* {{cmd\|r.in.gdal}} - useful for importing raster data from [http://www.gdal.org/formats_list.html very many source data formats].
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	* {{cmd\|v.vol.rst}} - useful for 3D spline interpolation between sparse data points. See the Slovakia 3D precipitation voxel isosurfaces screenshot on the {{website\|screenshots/viz.php\|visualization screenshots}} page. Tutorial can be found in the [http://www.grassbook.org/data_menu2nd.php GRASS book 2nd Ed.], chapter 7.		* {{cmd\|v.vol.rst}} - useful for 3D spline interpolation between sparse data points. See the Slovakia 3D precipitation voxel isosurfaces screenshot on the {{website\|screenshots/viz.php\|visualization screenshots}} page. Tutorial can be found in the [http://www.grassbook.org/data_menu2nd.php GRASS book 2nd Ed.], chapter 7.






	== Conventions ==		== Conventions ==

⚠️HamishBowman: /* Conventions */

2014-06-25T11:13:04Z

Conventions

← Older revision		Revision as of 11:13, 25 June 2014
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	== Conventions ==		== Conventions ==

	Wind ~~meteo~~ data usually follow a convention different from the GRASS one. First, the wind direction expresses the direction which wind blows FROM and not TO. Second, the convention on directions differs from the one adopted by GRASS (for aspect, flow direction, etc.).		Wind meteorological data usually follow a convention different from the GRASS one. First, the wind direction expresses the direction which wind blows FROM and not TO. Second, the convention on directions differs from the one adopted by GRASS (for aspect, flow direction, etc.), which is the mathematical or Cartesian convention: CCW from the +x axis.

⚠️Madi at 09:21, 19 June 2014

2014-06-19T09:21:40Z

← Older revision		Revision as of 09:21, 19 June 2014
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	* {{cmd\|v.vol.rst}} - useful for 3D spline interpolation between sparse data points. See the Slovakia 3D precipitation voxel isosurfaces screenshot on the {{website\|screenshots/viz.php\|visualization screenshots}} page. Tutorial can be found in the [http://www.grassbook.org/data_menu2nd.php GRASS book 2nd Ed.], chapter 7.		* {{cmd\|v.vol.rst}} - useful for 3D spline interpolation between sparse data points. See the Slovakia 3D precipitation voxel isosurfaces screenshot on the {{website\|screenshots/viz.php\|visualization screenshots}} page. Tutorial can be found in the [http://www.grassbook.org/data_menu2nd.php GRASS book 2nd Ed.], chapter 7.

⚠️Madi at 09:21, 19 June 2014

2014-06-19T09:21:02Z

← Older revision		Revision as of 09:21, 19 June 2014
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	== Meteorology ==		== Meteorology ==


	[[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]]
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	* {{cmd\|v.vol.rst}} - useful for 3D spline interpolation between sparse data points. See the Slovakia 3D precipitation voxel isosurfaces screenshot on the {{website\|screenshots/viz.php\|visualization screenshots}} page. Tutorial can be found in the [http://www.grassbook.org/data_menu2nd.php GRASS book 2nd Ed.], chapter 7.		* {{cmd\|v.vol.rst}} - useful for 3D spline interpolation between sparse data points. See the Slovakia 3D precipitation voxel isosurfaces screenshot on the {{website\|screenshots/viz.php\|visualization screenshots}} page. Tutorial can be found in the [http://www.grassbook.org/data_menu2nd.php GRASS book 2nd Ed.], chapter 7.




	== Conventions ==		== Conventions ==

⚠️Madi at 09:20, 19 June 2014

2014-06-19T09:20:16Z

← Older revision		Revision as of 09:20, 19 June 2014
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	== Meteorology ==		== Meteorology ==

	~~GRASS used together with [http://grass.osgeo.org/statsgrass/index.php R-stats] provides a powerful toolset to analyse meteorological time series and to perform spatio-temporal interpolation.~~

			[[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]~~]		GRASS used together with [http://grass.osgeo.org/statsgrass/index.php R-stats] provides a powerful toolset to analyse meteorological time series and to perform spatio-temporal interpolation.

	* [[GRIB\|Importing GRIB data]]		* [[GRIB\|Importing GRIB data]]
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	* {{cmd\|v.vol.rst}} - useful for 3D spline interpolation between sparse data points. See the Slovakia 3D precipitation voxel isosurfaces screenshot on the {{website\|screenshots/viz.php\|visualization screenshots}} page. Tutorial can be found in the [http://www.grassbook.org/data_menu2nd.php GRASS book 2nd Ed.], chapter 7.		* {{cmd\|v.vol.rst}} - useful for 3D spline interpolation between sparse data points. See the Slovakia 3D precipitation voxel isosurfaces screenshot on the {{website\|screenshots/viz.php\|visualization screenshots}} page. Tutorial can be found in the [http://www.grassbook.org/data_menu2nd.php GRASS book 2nd Ed.], chapter 7.









	== Conventions ==		== Conventions ==

⚠️Madi at 09:18, 19 June 2014

2014-06-19T09:18:55Z

← Older revision		Revision as of 09:18, 19 June 2014
Line 19:		Line 19:

	* {{cmd\|v.vol.rst}} - useful for 3D spline interpolation between sparse data points. See the Slovakia 3D precipitation voxel isosurfaces screenshot on the {{website\|screenshots/viz.php\|visualization screenshots}} page. Tutorial can be found in the [http://www.grassbook.org/data_menu2nd.php GRASS book 2nd Ed.], chapter 7.		* {{cmd\|v.vol.rst}} - useful for 3D spline interpolation between sparse data points. See the Slovakia 3D precipitation voxel isosurfaces screenshot on the {{website\|screenshots/viz.php\|visualization screenshots}} page. Tutorial can be found in the [http://www.grassbook.org/data_menu2nd.php GRASS book 2nd Ed.], chapter 7.

⚠️Madi at 09:17, 19 June 2014

2014-06-19T09:17:56Z

← Older revision		Revision as of 09:17, 19 June 2014
Line 19:		Line 19:

	* {{cmd\|v.vol.rst}} - useful for 3D spline interpolation between sparse data points. See the Slovakia 3D precipitation voxel isosurfaces screenshot on the {{website\|screenshots/viz.php\|visualization screenshots}} page. Tutorial can be found in the [http://www.grassbook.org/data_menu2nd.php GRASS book 2nd Ed.], chapter 7.		* {{cmd\|v.vol.rst}} - useful for 3D spline interpolation between sparse data points. See the Slovakia 3D precipitation voxel isosurfaces screenshot on the {{website\|screenshots/viz.php\|visualization screenshots}} page. Tutorial can be found in the [http://www.grassbook.org/data_menu2nd.php GRASS book 2nd Ed.], chapter 7.





	== Conventions ==		== Conventions ==

← Older revision		Revision as of 11:16, 25 June 2014
Line 9:		Line 9:
	* [[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

	* {{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),~~ See also [http://casoilresource.lawr.ucdavis.edu/drupal/node/989 Visualizing Terrain Surface Indicies with Scaled Arrows].		* {{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.
			: See also [http://casoilresource.lawr.ucdavis.edu/drupal/node/989 Visualizing Terrain Surface Indicies with Scaled Arrows].

	* {{cmd\|r.in.gdal}} - useful for importing raster data from [http://www.gdal.org/formats_list.html very many source data formats].		* {{cmd\|r.in.gdal}} - useful for importing raster data from [http://www.gdal.org/formats_list.html very many source data formats].