How to create a DEM starting from layers shapefile "contour lines" and "shares"?
Which module of GRASS do I need to use?
[GIS] How to create a Digital Elevation Model using GRASS
contourdemgrass
Related Solutions
After using v.surf.rst, it's only a question about how to display the resulting cost raster.
GRASS offers r.colors to specify a color map for a raster. As far as I can see, the normal behavior of GRASS is to interpolate colors, so you you'll have to work around this:
r.colors map=travel_costs color=rules
0 green
100 green
101 yellow
200 yellow
201 red
300 red
end
there are lots of information about creating dem. but you must be clear about what data you have?
- Creating a DEM from contours, here
- Creating a DEM from vector data, here
- Creating Maps from SRTM Data, here
- Inverse Distance Weighting (IDW) Interpolation using QGIS , here
- A workflow for creating beautiful relief shaded dems using GDAL, here
i hope it helps you...
Best Answer
In the GRASS GIS Wiki, there is a dedicated page for this: http://grass.osgeo.org/wiki/Contour_lines_to_DEM The page demonstrates and compares a number of different methods of converting vector contour lines into raster DEM surfaces including screenshots.