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
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