dissolve converting 2d -> 3d
|Assigned to:||-||% Done:||
|Platform:||OSX, Linux||Patch supplied:||No|
|Platform version:||OSX 10.8.2, Linux: Ubuntu 12.04||Affected version:||1.8.0|
|Status info:||Causes crash or corruption:||No|
It seems that when I dissolve a shapefile with 2d polygons, the output is a 3d PolygonZ shapefile (with Z=0 for all vertices).
A work around is to convert it back into 2d with ogr2ogr, but it took me a while to figure out what was going on.