GRASS 6 Tutorial/Displaying spatial data - Revision history

⚠️Madi at 13:05, 8 August 2013

2013-08-08T13:05:58Z

← Older revision		Revision as of 13:05, 8 August 2013
Line 45:		Line 45:

	[[File:D_profile.png\|center\|300px]]		[[File:D_profile.png\|center\|300px]]


			[[Category:Tutorial]]
			[[Category:HowTo]]

⚠️Dmci: /* Displaying vector data from the CLI */

2013-08-05T21:40:10Z

Displaying vector data from the CLI

← Older revision		Revision as of 21:40, 5 August 2013
Line 33:		Line 33:
	g.region vect=geology		g.region vect=geology
	d.vect geology type=area		d.vect geology type=area

	[[File:D_vect.png\|center\|300px]]		[[File:D_vect.png\|center\|300px]]

	We can return the attributes assigned to features, using <code>d.what.vect</code> and clicking on the relevant features in the display window:		We can return the attributes assigned to features, using <code>d.what.vect</code> and clicking on the relevant features in the display window:
	[[File:D_what_vect.png\|center\|300px]]		[[File:D_what_vect.png\|center\|300px]]

	===Plotting an elevation profile===		===Plotting an elevation profile===

⚠️Dmci: /* Displaying vector data from the CLI */

2013-08-05T21:39:52Z

Displaying vector data from the CLI

← Older revision		Revision as of 21:39, 5 August 2013
Line 30:		Line 30:
	We can display vector data very easily in the display monitors using the module [http://grass.osgeo.org/grass65/manuals/d.vect.html <code>d.vect</code>]. To quickly display a vector we:		We can display vector data very easily in the display monitors using the module [http://grass.osgeo.org/grass65/manuals/d.vect.html <code>d.vect</code>]. To quickly display a vector we:

			d.mon start=x0 ''(if you don't have a monitor open)''
			g.region vect=geology
	d.vect geology type=area		d.vect geology type=area

⚠️Dmci: /* Displaying raster data from the CLI */

2013-08-05T21:39:06Z

Displaying raster data from the CLI

← Older revision		Revision as of 21:39, 5 August 2013
Line 26:		Line 26:

	[[File:D_what_rast.png\|center\|300px]]		[[File:D_what_rast.png\|center\|300px]]

			===Displaying vector data from the CLI===
			We can display vector data very easily in the display monitors using the module [http://grass.osgeo.org/grass65/manuals/d.vect.html <code>d.vect</code>]. To quickly display a vector we:

			d.vect geology type=area

			[[File:D_vect.png\|center\|300px]]

			We can return the attributes assigned to features, using <code>d.what.vect</code> and clicking on the relevant features in the display window:
			[[File:D_what_vect.png\|center\|300px]]

	===Plotting an elevation profile===		===Plotting an elevation profile===

⚠️Dmci: /* Displaying raster data from the CLI */

2013-08-05T21:22:36Z

Displaying raster data from the CLI

← Older revision		Revision as of 21:22, 5 August 2013
Line 23:		Line 23:
	To have more control over the display settings for the raster, check the additional options by <code>d.rast --help</code>. You can navigate within the display monitor using a combination of <code>d.pan</code> and <code>d.zoom</code> in conjunction with the mouse buttons.		To have more control over the display settings for the raster, check the additional options by <code>d.rast --help</code>. You can navigate within the display monitor using a combination of <code>d.pan</code> and <code>d.zoom</code> in conjunction with the mouse buttons.

	If you want to retrieve the pixel values at a certain x,y location, you should use the <code>d.what.rast</code> command, which will change the pointer in the display window to a cross-hair. With the mouse, you click on the location(s) of interest and the raster values are printed in the terminal window.		If you want to retrieve the pixel values at a certain x,y location, you should use the <code>d.what.rast</code> command, which will change the pointer in the display window to a cross-hair. With the mouse, you click on the location(s) of interest and the raster values are printed in the terminal window. The module <code>d.where</code>, which prints the geographic (x,y) location of the cursor, works in a similar way.

	[[File:D_what_rast.png\|center\|300px]]		[[File:D_what_rast.png\|center\|300px]]

⚠️Dmci: /* Plotting an elevation profile */

2013-08-05T21:21:14Z

Plotting an elevation profile

← Older revision		Revision as of 21:21, 5 August 2013
Line 28:		Line 28:

	===Plotting an elevation profile===		===Plotting an elevation profile===
	Plotting an elevation profile between two points is done by running <code>d.profile</code>:		Plotting an elevation profile between two points is done by running <code>d.profile</code>. Click the
			middle mouse button to define the start of the line profile and click it again to identify the end of
			the line.

	[[File:~~Dprofile-elevation~~.png\|center\|300px]]		[[File:D_profile.png\|center\|300px]]

⚠️Dmci: /* Displaying raster data from the CLI */

2013-08-05T21:18:57Z

Displaying raster data from the CLI

← Older revision		Revision as of 21:18, 5 August 2013
Line 24:		Line 24:

	If you want to retrieve the pixel values at a certain x,y location, you should use the <code>d.what.rast</code> command, which will change the pointer in the display window to a cross-hair. With the mouse, you click on the location(s) of interest and the raster values are printed in the terminal window.		If you want to retrieve the pixel values at a certain x,y location, you should use the <code>d.what.rast</code> command, which will change the pointer in the display window to a cross-hair. With the mouse, you click on the location(s) of interest and the raster values are printed in the terminal window.

			[[File:D_what_rast.png\|center\|300px]]

	===Plotting an elevation profile===		===Plotting an elevation profile===

⚠️Dmci at 21:18, 5 August 2013

2013-08-05T21:18:25Z

← Older revision		Revision as of 21:18, 5 August 2013
Line 17:		Line 17:
	Then you simply launch the <code>d.rast</code> command to display the map.		Then you simply launch the <code>d.rast</code> command to display the map.
	d.rast elevation		d.rast elevation

			[[File:D_rast_elevation.png\|center\|300px]]


	To have more control over the display settings for the raster, check the additional options by <code>d.rast --help</code>. You can navigate within the display monitor using a combination of <code>d.pan</code> and <code>d.zoom</code> in conjunction with the mouse buttons.		To have more control over the display settings for the raster, check the additional options by <code>d.rast --help</code>. You can navigate within the display monitor using a combination of <code>d.pan</code> and <code>d.zoom</code> in conjunction with the mouse buttons.

⚠️Dmci: /* Displaying raster data from the CLI */

2013-07-31T21:59:54Z

Displaying raster data from the CLI

← Older revision		Revision as of 21:59, 31 July 2013
Line 21:		Line 21:

	If you want to retrieve the pixel values at a certain x,y location, you should use the <code>d.what.rast</code> command, which will change the pointer in the display window to a cross-hair. With the mouse, you click on the location(s) of interest and the raster values are printed in the terminal window.		If you want to retrieve the pixel values at a certain x,y location, you should use the <code>d.what.rast</code> command, which will change the pointer in the display window to a cross-hair. With the mouse, you click on the location(s) of interest and the raster values are printed in the terminal window.

	~~[[File:Dmon_elevation.png\|center\|200px]][[File:Dwhatrast.png\|center\|200px]]~~

	===Plotting an elevation profile===		===Plotting an elevation profile===

⚠️Dmci: /* Displaying raster data from the CLI */

2013-07-31T21:46:48Z

Displaying raster data from the CLI

← Older revision		Revision as of 21:46, 31 July 2013
Line 22:		Line 22:
	If you want to retrieve the pixel values at a certain x,y location, you should use the <code>d.what.rast</code> command, which will change the pointer in the display window to a cross-hair. With the mouse, you click on the location(s) of interest and the raster values are printed in the terminal window.		If you want to retrieve the pixel values at a certain x,y location, you should use the <code>d.what.rast</code> command, which will change the pointer in the display window to a cross-hair. With the mouse, you click on the location(s) of interest and the raster values are printed in the terminal window.

	[[File:Dmon_elevation.png\|center\|~~300px~~]][[File:Dwhatrast.png\|~~right~~\|~~300px~~]]		[[File:Dmon_elevation.png\|center\|200px]][[File:Dwhatrast.png\|center\|200px]]

	===Plotting an elevation profile===		===Plotting an elevation profile===