[Qgis-user] two little new plugins

[Paolo Cavallini]

Il 14/11/2010 17:39, Möri Cedric ha scritto:

> TraceDigitize works only for line and polygon layers. It allows to
> digitize new features by following existing lines or polygon
> boundaries. The tool will add all vertex points, that are in snapping
> distance of the cursor. Just press ctrl key while moving the mouse.
> If control isn't pressed, it is just like the normal digitize tool.
> Don't forget to set the (background) snapping options, as the tool
> needs them.

Quite nice. Beware though that it is very easy to generate invalid 
geometries this way, and get a free crash as a consequence:
Error:
         GDAL Error 1: Attempt to read shape with feature id (-2) out of 
available range.
Segmentation fault
Thanks a lot.
-- 
http://www.faunalia.it/pc