Il 01/10/2012 15:16, Micha Silver ha scritto: > You will need two steps. First use the points to create a raster surface. In > the > Raster menu, choose Analysis->Grid. With this GDAL tool you can create a > raster using > some simple algorithms. THen using this new raster as your surface, use the > GDAL tool > Raster->Extraction->Contour to get vector contour lines.
There is also a plugin that does the same, without the intermediate raster. All the best. -- Paolo Cavallini - Faunalia www.faunalia.eu Full contact details at www.faunalia.eu/pc Nuovi corsi QGIS e PostGIS: http://www.faunalia.it/calendario _______________________________________________ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user