Eric wrote:
My goal is to import isolines (elevation lines) as well as
elevation points from another mapping program into GRASS and then
interpolate a raster based on the vector data and then export as
a DEM file.
...
Also, can you recommend a tutorial that covers this type of
conversion oriented toward beginners?
- set raster bounds/resolution with g.region,
- import with v.in.ascii,v.in.ogr + v.to.rast, or r.in.xyz,
- then one of the methods shown here:
http://grass.osgeo.org/wiki/Contour_lines_to_DEM
(r.surf.contour is my favourite, but there are a number of choices)
- export raster with r.out.gdal
After importing the data points, I do not see anything at
all visually in GRASS GIS Map Display.
see also http://grass.osgeo.org/wiki/Importing_data
Hamish