How to smooth the contour

GRASS GRASS user
1

At 11:29 AM 11/4/97 -0700, you wrote:

I have generated the contours (in vector format) from a raster dem using
r.contour.
However, the contour looks ugly without a smoothing process. Does anyone
know how can I smooth the contour, or how to generate smooth contours from
a dem in Grass.

Thanks in advance,

Vincent
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Vincent C. Tao
Geomatics Officer and Research Scientist
GIS/GPS/Photogrammetry/Remote Sensing

Advanced Computing Business Unit, Alberta Research Council
6815-8 St., NE, Calgary, Alberta, Canada T2E 7H7
Voice: (403) 297-7584 Fax: (403) 297-2339
Homepage: http://skyler.arc.ab.ca/ACE-staff.html
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One approach that might help: After you turn the DEM into a contour map,
reduce the cell size, then turn the contour back into a DEM. This will
result in an interpolated DEM that you can turn back into a contour map
with, hopefully, smoother lines.

Jim Schmidt
avenues@sonnet.com