Hi folks,
As if you couldn't guess. New question.
Some one opened one of the dxf files in ArcView. It looked like it had
negative elevations. When I ran v.surf.rst then v.color there was an
indication that some of my attributes were negative. Is there a way to
correct this. Maybe a way to add the the negative number making the
negatives zero?
Also is there a way to be sure the elevations are set to metres?
Kurt
Hi Kurt,
I'd try selecting the negative values, multiplying by
-1 and then adding to the original raster map,
something like
r.mapcalc 'neg_mask=if(rast < 0, rast, 0)'
r.mapcalc 'mask2=neg_mask*-1'
r.mapcalc 'new_rast=rast+mask2'
haven't tested it but that's my idea of how to do
it...
Cheers
Daniel
--- Kurt Springs <ferret_bard@mac.com> wrote:
Hi folks,
As if you couldn't guess. New question.
Some one opened one of the dxf files in ArcView. It
looked like it had
negative elevations. When I ran v.surf.rst then
v.color there was an
indication that some of my attributes were negative.
Is there a way to
correct this. Maybe a way to add the the negative
number making the
negatives zero?Also is there a way to be sure the elevations are
set to metres?Kurt
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