I have some 3-d vector faces. They were defined in a text file like
this:
F 10
1 2 1
2 2 2
...
...
etc.
I imported them into grass like this:
v.in.ascii -zn input=faces.txt out=faces format=standard
and all seems fine.
I can see the faces, and if I click on points around the edges I can
get a height as well.
I can't figure out how to generate a raster DEM from these faces.
Essentially I would like to know the approximate elevation at each
raster point inside the faces.
I tried v.to.rast but then I get "Column parameter missing"
For v.to.rast3 I get "Unable to get layer info for vector map"
I also tried v.extrude but I see all 0s (ie Number of areas: 0 etc.)
Did I do something wrong on my import? Did I miss some other way to
do the conversion?
I want to be able to do some mapcalcs with the heights of an these
faces compared to another raster map, but I can't figure out how to
convert these faces to something that I can work with.
Thanks much,
--Adam
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