I agree - I once did a shaded relief of the Kilimanjaro with v.surf.rst
for calculating a DEM from contour lines and elevation points.
The results where much better than with TIN or ESRIs topogrid module. It
was only a bit tricky because of the longer computing times and memory
management.
If you want really good results I recommend looking into v.surf.rst.
Andreas
On 3/24/10 9:05 AM, Marco Hugentobler wrote:
Hi Jeremy
You might try a different interpolation then. In the interpolation plugin, you
could use inverse distance weighting. In GRASS, there is v.surf.rst which I
think is a good choice for smooth surfaces.
Regards,
Marco
Am Dienstag, 23. März 2010 15.29:36 schrieb Jeremy G:
Hi,
Starting with a point vector shapefile, I did a TIN interpolation with the
QGIS plugin. If I try to shade it as it is, the result is full of
irregularities (1). Is there a method to smooth the result ?
Thanks !
Jeremy
(1) : http://www.geographiques.org/img/qgis_dem.png
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