Patton, Eric wrote:
Not sure if this is very critical, but I have noticed a problem with
r.shaded.relief. If the region is set to 10m and then a shaded rel. map is
produced from a 30m input data, a corrupt map is produced.
example with spearfish data:
# set region, and force 10m resolution
g.region rast=elevation.10m -p
I assume you meant g.region rast=elevation.10m res=10 -ap ?
# compute shaded rel. map from 30m res data:
# see image [1]
r.shaded.relief map=elevation.dem shade=shade
I can't reproduce this. I can produce a Moire-patterned shaded-relief map,
since I didn't resample the 30m data to 10m:
Try r.resample first?
r.resample won't help. That uses libgis' built-in nearest-neighbour
resampling, so you will get exactly the same result as with using the
lower resolution map.
Using r.resamp.interp with method=bilinear or method=bicubic should
eliminate the problems with generating slope and aspect maps.
--
Glynn Clements [EMAIL PROTECTED]
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