Use "settings" - "snapping options" and tick "avoid intersections" for
the layer in question
Bernhard
Am 08.11.2012 10:07, schrieb uk52rob:
Hi,
I have a PostGIS polygon layer in QGIS which I need to add features to.
I can add polygons to it, no problem, but I need to be able to have the edges
of the new features lined up exactly with the existing features. This is
essentially to fill a void in the layer, or to continue in one direction. I
have done this before using local shapefiles and the difference tool (very time
consuming!), but this requires separate layers.
Is it possible to achieve the same result with a single PostGIS layer, so I can
overlap an existing feature with my new feature, and trim it to the existing
feature's boundary?
I hope this makes sense!
Thanks
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