I have managed to get qgis to show my Mastermap data which is stored in a postGis database. It's national coverage so seems to take ages to load but that's another question.
I basically want to export the map that I can see (or at least one layer of it) as a DXF.
When I try to do this (layer save as) it starts to generate a temp version of the dxf file but then just hangs and I have to use task manager to close it and start all over again. It's as if it's trying to read the whole database.
The postGis database was created using Edonica. Some of the field names are different to those you get if you load a gml file directly in to qgis so this may be the problem. Or do I have to make a selection of the area I want?
Thanks for any help