Hi folks,
i'm currently playing around with a set of LIDAR points (200m Grid, but
for free).
Trying to "pimp" the model up, i also added some hight points from a
topo-wms and wanted to add break lines and structure lines (streams).
Now i'm a bit clueless about the usage of the line features. The
interpolation plugin always asks for a interpolation attribute, which
doesn't make much sense cause those lines don't have them. They choice of
the attribute field seems automatically limited to numerical fields (which
makes sense for the z-values of points).
When i just create and pick a numerical field without values, the lines
seem not to have any effect on the interpolation. When i use e.g the id,
it has bizarre effects on the outcome.
So, how are line features supposed to work in interpolation plugin? Or how
can i give structure lines hight values that make sense?
All tutorials and documentations (e.g.
http://docs.qgis.org/1.8/html/en/docs/user_manual/plugins/plugins_interpolation.html
) i found on that only cover the unproblematic usage of points and leave
out the lines completely.
Thanx
Bernd
--
Bernd Vogelgesang * Siedlerstrasse 2 * 91083 Baiersdorf * +49-9133-825374
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