Hello all,
I am using gdaldem that came with the GDAL 1.7.3 version on Ubuntu
12.04. I am trying to create slope maps with a command something like this:
gdaldem slope -s scale=111120 source_DEM.tif target_SLOPE.tif
the source DEM geotiff was created with gdalwarp, re-projecting a
National Elevation Dataset 30 meter, ESRIHdr formatted grid from
geographic-NAD83 to geographic-WGS84. Based on a thread I found on use
of 'gdaldem slope' on the web, the re-projection was attempted with both
a bilinear and cubic re-sampling method.
The target geotiff has values of only 90 and Null. I am getting no
intermediate values (in degrees, the default).
Thanks for any help in advance,
Bill
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