Hi list:

I hope someone can help me: I'm digitizing a georeferenced raster map. (CRS is set to UTM-17s). I've created a new polygon layer and I can do individual polygons; but when I try to add a new one next to the existing polygon, I get an error: "No se pudo añadir el objeto espacial porque eliminar las intersecciones de polígonos cambiaría el tipo de geometría" (The feature could not be added because removing the polygon intersections would change the geometry type).

Some idea about what is wrong?

Regards

Carlos Cerdán
Cajamarca - Perú


PD My PC: Ubuntu 11.04 (32 and 64 bits) - QGIS 1.7.1


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