Importing data: Difference between revisions

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* [http://www.gdal.org/formats_list.html Supported raster formats] via {{cmd|r.in.gdal}}
* [http://www.gdal.org/formats_list.html Supported raster formats] via {{cmd|r.in.gdal}}
* [http://www.gdal.org/ogr/ogr_formats.html Supported vector formats]via {{cmd|v.in.ogr}}
* [http://www.gdal.org/ogr/ogr_formats.html Supported vector formats] via {{cmd|v.in.ogr}}
 
 
Create a location for your data with the correct map projection using the Location Wizard on the main startup screen, then in the menus:
  Raster formats use File -> Import using GDAL
  Vector formats use File -> Import using OGR
 
After the map has been imported you can add it to the display layer list in the Layer Manager window. You will most likely want to right click on the map in the layer list and select "Zoom to selected map(s)". Otherwise when you go to view the map you could be far away and just see a white display canvas.
 
The "computation region" is a very important concept in GRASS. You can read about it in the {{cmd|rasterintro}} help page. You can set the computation region and cell resolution to match a specific map with the {{cmd|g.region}} module.
 
 
=== External links ===
 
* {{cmd|r.external}}
* {{cmd|v.external}}
 
=== Bulk data import ===
 
* wxGUI menu tools
 


=== Modules ===
=== Modules ===

Revision as of 08:48, 21 February 2010

Getting your data into GRASS

GRASS supports many common GIS formats, and many uncommon ones too.

The primary import/export tool is called GDAL/OGR.


Create a location for your data with the correct map projection using the Location Wizard on the main startup screen, then in the menus:

 Raster formats use File -> Import using GDAL
 Vector formats use File -> Import using OGR

After the map has been imported you can add it to the display layer list in the Layer Manager window. You will most likely want to right click on the map in the layer list and select "Zoom to selected map(s)". Otherwise when you go to view the map you could be far away and just see a white display canvas.

The "computation region" is a very important concept in GRASS. You can read about it in the rasterintro help page. You can set the computation region and cell resolution to match a specific map with the g.region module.


External links

Bulk data import

  • wxGUI menu tools


Modules

Raster

Vector and points

Data formats