[GRASS-user] [GRASSLIST:1183] how to rotate raster in GRASS ?
ArcGIS better than GRASS ?? I hope NO!!
hamish_nospam at yahoo.com
Fri Sep 1 00:05:48 EDT 2006
Maciej Sieczka wrote:
> Pierluigi De Rosa wrote:
> > Yes, unfortunately I have to rotate a DEM for a specifica angle so
> > do a transposition is not a good method.
> > I kwon ArcGIS can rotate DEM but I hope this thinks is possible also
> > in GRASS...
> I haven't thought much of this, but how about r.to.vect feature=point
> -> v.transform zrot=angle?
Add v.surf.rst to transform back to a raster grid and I think you have a
very good method there. Careful with g.region settings. To make a MASK,
maybe use either: v.mkgrid; define a box with corner coords into
r.in.poly or v.in.ascii format=standard + v.to.rast; or v.buffer
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