Hi Paolo you're right about the invalid geometries. I try to put a warning in the tool, to tell you that there is problem in the geometry. Doing this I stumbeld over a bug in the Rubberband class, so it will take some work to be done (hopefully by Juergen). As there are other issues as well, I marked the plugin as experimental for now.
regards Cédric mit freundlichen Grüssen Cédric Möri GIS-Informatiker -- Kanton Solothurn Bau- und Justizdepartement Amt für Geoinformation Rötistrasse 4 4501 Solothurn Telefon: +41 (0)32 627 24 75 Telefax: +41 (0)32 627 22 14 mailto:[email protected] http://www.agi.so.ch ----- Originalnachricht ----- Von: "Paolo Cavallini" <[email protected]> Gesendet: Son, 14.11.2010 19:20 An: [email protected] Betreff: Re: [Qgis-user] two little new plugins 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 _______________________________________________ Qgis-user mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/qgis-user _______________________________________________ Qgis-user mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/qgis-user
