Contents
How to use grass vector and raster layers in QGIS?
To use GRASS functionalities and/or visualize GRASS vector and raster layers in QGIS, you must select and load the GRASS plugin with the Plugin Manager. Therefore go to the menu Plugins ‣ Manage Plugins, select GRASS and click [OK].
What can you do with GRASS GIS plugin?
The GRASS plugin provides access to GRASS GIS (see GRASS-PROJECT Literature and Web References) databases and functionalities. This includes visualization of GRASS raster and vector layers, digitizing vector layers, editing vector attributes, creating new vector layers and analysing GRASS 2D and 3D data with more than 400 GRASS modules.
Where do I find the grass toolbar in QGIS?
The GRASS toolbar appears in the QGIS main window. In the GRASS toolbar, click the Open mapset icon to bring up the MAPSET wizard. For Gisdbase browse and select or enter the path to the newly created folder grassdata. You should now be able to select the LOCATION alaska and the MAPSET demo.
How does QGIS allow you to reproject data on the fly?
QGIS allows you to reproject data “on the fly”. What this means is that even if the data itself is in another CRS, QGIS can project it as if it were in a CRS of your choice. To enable “on the fly” projection, click on the CRS Status button in the Status Bar along the bottom of the QGIS window:
Can You reproject one location in GRASS GIS?
Answer: For quality reasons, GRASS GIS handles one projection per location. You can reproject bewteen locations as well as reproject during data import if needed. Reprojection on the fly can easily introduce artifacts.
How to export a GeoTIFF to GRASS GIS?
Export as a GeoTIFF, use gdalwarp to change the projection and then import the new GeoTIFF file into GRASS GIS. If you have installed gdal, you almost certainly have gdalwarp as well. Indications for gdalwarp are found at http://www.gdal.org/gdalwarp.html. The options for gdalwarp may be a bit confusing for newbies.