leonidas wrote:
> I need to generate a DEM using a line vector file (contours,
> step=20m, some are disjoined) and also combine a second point
> vector file with heights.How can I achieve that with Grass?
v.to.rast + r.surf.contour
> In the contours file there is also the coastline (height=0).Will
> that produce any error?
yes, please read the r.surf.contour help page carefully about
that.
the quick workaround is to use r.mapcalc to multiply your raster
input with:
r.mapcalc "contline_mult = (contlines*100000)+1"
then run r.surf.contour
then reverse the above multiplication:
r.mapcalc "dem = (contour_dem -1) / 100000"
besides that pain r.surf.contour does a really nice job.
Hamish
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