Even Rouault wrote:
2) Use gdal_rasterize to burn the contour lines.
See http://gdal.org/gdal_rasterize.html
3) Fill the holes (the nodata values) with gdal_fillnodata.py.
See http://gdal.org/gdal_fillnodata.html
Now, the result should be usable with gdaldem.
well, yes, but it's likely to be pretty ugly -- it will represent the
elevation as steps -- constant values between contours. If you have
enough contour lines, and want a low-resolution DEM, that might be OK.
However, you'll get much prettier results if you interpolate in some way
to get a smoother result.
Unfortunately, interpolating contour lines well is not trivial -- I'd do
some googling and see what you can find.
GRASS may have something to help you here, too.
-Chris
--
Christopher Barker, Ph.D.
Oceanographer
Emergency Response Division
NOAA/NOS/OR&R (206) 526-6959 voice
7600 Sand Point Way NE (206) 526-6329 fax
Seattle, WA 98115 (206) 526-6317 main reception
chris.bar...@noaa.gov
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