GRASS Location Wizard - Revision history

Neteler: minor update

2023-10-10T07:22:20Z

minor update

⚠️Ychemin at 10:42, 12 March 2016

2016-03-12T10:42:22Z

← Older revision		Revision as of 10:42, 12 March 2016
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	=== ISIS-GRASS ===		=== ISIS-GRASS ===

	When Isis (astrogeology.usgs.gov) is installed, GRASS recognizes it and opens the ISIS-GRASS planetary mode. Isis commands and GRASS commands are both recognized at the same time, permitting combined scripting. Possibilities of building an Isis menu into GRASS is found in the ~~PLanetary Mapping~~ page in this wiki.		When Isis (astrogeology.usgs.gov) is installed, GRASS recognizes it and opens the ISIS-GRASS planetary mode. Isis commands and GRASS commands are both recognized at the same time, permitting combined scripting. Possibilities of building an Isis menu into GRASS is found in the [[Planetary_mapping]] page in this wiki.

	[[Image:Isisgrasswelcome.png\|500px\|thumb\|center\|ISIS-GRASS welcome page]]		[[Image:Isisgrasswelcome.png\|500px\|thumb\|center\|ISIS-GRASS welcome page]]

⚠️Ychemin: /* wxGUI Graphical Location Wizard */

2016-03-12T10:26:26Z

wxGUI Graphical Location Wizard

← Older revision		Revision as of 10:26, 12 March 2016
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	It provides a number of ways to set the map projection: from a geodata file (SHAPE, GeoTIFF etc), using an EPSG code, setting parameters manually, etc.		It provides a number of ways to set the map projection: from a geodata file (SHAPE, GeoTIFF etc), using an EPSG code, setting parameters manually, etc.

	Here an example:		Here an example of manual definition of a spatial reference system (SRS), GRASS internally speaks to PROJ4 in its own language to set up the SRS.

	First screen of the Location wizard which is found in the GRASS GIS Startup window:		First screen of the Location wizard which is found in the GRASS GIS Startup window:

⚠️Ychemin at 10:24, 12 March 2016

2016-03-12T10:24:47Z

← Older revision		Revision as of 10:24, 12 March 2016
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	</source>		</source>

	== Planetary ~~mode:~~ ISIS-GRASS ==		== Planetary mapping ==
			=== ISIS-GRASS ===

	When Isis (astrogeology.usgs.gov) is installed, GRASS recognizes it and opens the ISIS-GRASS planetary mode. Isis commands and GRASS commands are both recognized at the same time, permitting combined scripting. Possibilities of building an Isis menu into GRASS is found in the PLanetary Mapping page in this wiki.		When Isis (astrogeology.usgs.gov) is installed, GRASS recognizes it and opens the ISIS-GRASS planetary mode. Isis commands and GRASS commands are both recognized at the same time, permitting combined scripting. Possibilities of building an Isis menu into GRASS is found in the PLanetary Mapping page in this wiki.

	[[Image:Isisgrasswelcome.png\|500px\|thumb\|center\|ISIS-GRASS welcome page]]		[[Image:Isisgrasswelcome.png\|500px\|thumb\|center\|ISIS-GRASS welcome page]]

			=== Planetary IAU codes ===

	by selecting the "New" button under "2. Select GRASS Location", the user will be able to select one of these options, including IAU planetary codes (default is 2009, you can browse for the input file IAU2000.csv).		by selecting the "New" button under "2. Select GRASS Location", the user will be able to select one of these options, including IAU planetary codes (default is 2009, you can browse for the input file IAU2000.csv).
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	[[Image:Location_wizard_select_IAU_Projection.png\|500px\|thumb\|center\|GRASS Location Wizard: IAU page user choices]]		[[Image:Location_wizard_select_IAU_Projection.png\|500px\|thumb\|center\|GRASS Location Wizard: IAU page user choices]]

			=== Planetary ellipsoid tables ===


	== ~~Using the planetary~~ ellipsoid tables ==

	GRASS 7 and its wxGUI location wizard have ellipsoid tables and support for the planetary bodies (hence, planets other than Earth) in our solar system.		GRASS 7 and its wxGUI location wizard have ellipsoid tables and support for the planetary bodies (hence, planets other than Earth) in our solar system.
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	[[Image:Location_wizard_select_Planetary_Ellipsoid_Page3.png\|500px\|thumb\|center\|GRASS Location Wizard: Choose planetary bodies definitions]]		[[Image:Location_wizard_select_Planetary_Ellipsoid_Page3.png\|500px\|thumb\|center\|GRASS Location Wizard: Choose planetary bodies definitions]]

			== Galactic mapping ==
			=== Milky Way and Galaxy coordinate systems ===
	== ~~Support for~~ Milky Way and Galaxy coordinate systems ==

	Depending on your reference frame, simple XY and lat/lon+spheroid locations can set up arbitrary Cartesian or polar coordinate systems as you like.		Depending on your reference frame, simple XY and lat/lon+spheroid locations can set up arbitrary Cartesian or polar coordinate systems as you like.

⚠️Ychemin at 10:21, 12 March 2016

2016-03-12T10:21:10Z

← Older revision		Revision as of 10:21, 12 March 2016
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	First screen of the Location wizard which is found in the GRASS GIS Startup window:		First screen of the Location wizard which is found in the GRASS GIS Startup window:

	[[Image:~~Location_wizard_with_IAU_codes~~.png\|500px\|thumb\|center\|GRASS Location Wizard: user choices]]		[[Image:Location_wizard_select_Planetary_Ellipsoid_Page.png\|500px\|thumb\|center\|GRASS Location Wizard: user choices]]

	The location wizard also helps you select the appropriate geodetic		The location wizard also helps you select the appropriate geodetic

⚠️Ychemin at 10:19, 12 March 2016

2016-03-12T10:19:27Z

← Older revision		Revision as of 10:19, 12 March 2016
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	[[Image:Location_wizard_select_Planetary_Ellipsoid_Page2.png\|500px\|thumb\|center\|GRASS Location Wizard: Ellipsoid page user choices]]		[[Image:Location_wizard_select_Planetary_Ellipsoid_Page2.png\|500px\|thumb\|center\|GRASS Location Wizard: Ellipsoid page user choices]]

			Finally, the planetary bodies option will appear.

			[[Image:Location_wizard_select_Planetary_Ellipsoid_Page3.png\|500px\|thumb\|center\|GRASS Location Wizard: Choose planetary bodies definitions]]

⚠️Ychemin at 10:17, 12 March 2016

2016-03-12T10:17:31Z

← Older revision		Revision as of 10:17, 12 March 2016
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	Once this is done, the user finds this selection page to define the projection system.		Once this is done, the user finds this selection page to define the projection system.

	[[Image:Location_wizard_select_Planetary_Ellipsoid_Page1.png\|500px\|thumb\|center\|GRASS Location Wizard: Ellipsoid page user choices]]		[[Image:Location_wizard_select_Planetary_Ellipsoid_Page1.png\|500px\|thumb\|center\|GRASS Location Wizard: Projection page user choices]]

			At this point, you need to select the Ellipsoid (only) button.

			[[Image:Location_wizard_select_Planetary_Ellipsoid_Page2.png\|500px\|thumb\|center\|GRASS Location Wizard: Ellipsoid page user choices]]



	== Support for Milky Way and Galaxy coordinate systems ==		== Support for Milky Way and Galaxy coordinate systems ==

⚠️Ychemin at 10:09, 12 March 2016

2016-03-12T10:09:45Z

← Older revision		Revision as of 10:09, 12 March 2016
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	[[Image:Location_wizard_select_Planetary_Ellipsoid_Page.png\|500px\|thumb\|center\|GRASS Location Wizard: user choices]]		[[Image:Location_wizard_select_Planetary_Ellipsoid_Page.png\|500px\|thumb\|center\|GRASS Location Wizard: user choices]]

	Once this is done, the user finds this selection page.		Once this is done, the user finds this selection page to define the projection system.

	[[Image:~~Location_wizard_select_IAU_Projection~~.png\|500px\|thumb\|center\|GRASS Location Wizard: Ellipsoid page user choices]]		[[Image:Location_wizard_select_Planetary_Ellipsoid_Page1.png\|500px\|thumb\|center\|GRASS Location Wizard: Ellipsoid page user choices]]

	== Support for Milky Way and Galaxy coordinate systems ==		== Support for Milky Way and Galaxy coordinate systems ==

⚠️Ychemin at 10:07, 12 March 2016

2016-03-12T10:07:25Z

← Older revision		Revision as of 10:07, 12 March 2016
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	GRASS 7 and its wxGUI location wizard have ellipsoid tables and support for the planetary bodies (hence, planets other than Earth) in our solar system.		GRASS 7 and its wxGUI location wizard have ellipsoid tables and support for the planetary bodies (hence, planets other than Earth) in our solar system.

	~~TODO~~: ~~add here where to find it~~ :-)		by selecting the "New" button under "2. Select GRASS Location", the user will be able to select one of these options. Select the following:

			[[Image:Location_wizard_select_Planetary_Ellipsoid_Page.png\|500px\|thumb\|center\|GRASS Location Wizard: user choices]]

			Once this is done, the user finds this selection page.

			[[Image:Location_wizard_select_IAU_Projection.png\|500px\|thumb\|center\|GRASS Location Wizard: Ellipsoid page user choices]]

	== Support for Milky Way and Galaxy coordinate systems ==		== Support for Milky Way and Galaxy coordinate systems ==

⚠️Ychemin at 10:01, 12 March 2016

2016-03-12T10:01:50Z

← Older revision		Revision as of 10:01, 12 March 2016
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	Once this is done, the user finds this selection page of IAU codes.		Once this is done, the user finds this selection page of IAU codes.

			[[Image:Location_wizard_select_IAU_Projection.png\|500px\|thumb\|center\|GRASS Location Wizard: IAU page user choices]]

← Older revision		Revision as of 07:22, 10 October 2023
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	Now the project area, i.e. the location including a mapset, has been created. You have "arrived" in the GRASS GIS system and can start working within this new location.		Now the project area, i.e. the location including a mapset, has been created. You have "arrived" in the GRASS GIS system and can start working within this new location.

	== GRASS GIS 7: Creating locations from command line ==		== GRASS GIS: Creating locations from command line ==

	You can create a new '''location''' from a raster or vector file or EPSG code:		You can create a new '''location''' from a raster or vector file or EPSG code:

	<source lang="bash">		<source lang="bash">
	# create new location from raster map (file must ~~have~~ metadata):		# create new location from raster map (file must contain projection metadata):
	~~grass70~~ -c myraster.tif /home/user/grassdata/mynewlocation		grass -c myraster.tif /home/user/grassdata/mynewlocation

	# create new location from vector map (file must ~~have~~ metadata):		# create new location from vector map (file must contain projection metadata):
	~~grass70~~ -c myvector.shp /home/user/grassdata/mynewlocation		grass -c myvector.shp /home/user/grassdata/mynewlocation

	# create new location from EPSG code:		# create new location from EPSG code:
	~~grass70~~ -c ~~epsg~~:31370 /home/user/grassdata/mynewlocation		grass -c EPSG:31370 /home/user/grassdata/mynewlocation
	</source>		</source>

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	<source lang="bash">		<source lang="bash">
	# create new mapset in an existing location:		# create new mapset in an existing location:
	~~grass70~~ -c /home/user/grassdata/nc_spm_08_grass7/mynewmapset		grass -c /home/user/grassdata/nc_spm_08_grass7/mynewmapset
	</source>		</source>