Thanks Moritz, v.extract did the job. The only downside is that I need to keep creating temporary layers since I'll have to do a series of edits. But no problem. It can be done.
Cheers Daniel On Wed, Aug 31, 2016 at 11:40 AM, Moritz Lennert < [email protected]> wrote: > On 31/08/16 16:32, Daniel Victoria wrote: > >> Hi List, >> >> This is probably more due to my lack of understanding of how v.edit >> works. But here it goes. >> >> I have a polygon vector layer where some of the polygons have a 'No >> data' label. I'd like to delete those polygons so I ran the command, >> with the following output: >> >> v.edit map=teste@isna tool=delete where="label like '%no data%'" >> Selecting features... >> 207 of 7200 features selected from vector map <teste@isna> >> 207 features deleted >> Building topology for vector map <teste@isna>... >> Registering primitives... >> 6993 primitives registered >> 29546 vertices registered >> Building areas... >> 2195 areas built >> 264 isles built >> Attaching islands... >> Attaching centroids... >> Number of nodes: 3086 >> Number of primitives: 6993 >> Number of points: 0 >> Number of lines: 0 >> Number of boundaries: 5017 >> Number of centroids: 1976 >> Number of areas: 2195 >> Number of isles: 264 >> v.edit complete. >> >> After that, the offending polygons where deleted however, their >> boundaries are still present. That is, when I load the vector in the map >> display, I still see the boundaries in some polygons, even though the >> area is not filled. Is this the intended behavior? I tried using the >> areadel tool but then the whong polygon was deleted. I'm guessing the >> shared boundary of a valid polygon was removed and his caused problems. >> >> Attached is a sample of what I'm seeing after v.edit delete >> >> > Attributes of areas are linked to the centroid of the area. So the > features you select through your query are these centroids, not the > boundaries. > > It would probably be nice to have a type=area option in v.edit. > > To get the same result, you could use v.extract -r type=area. > > Moritz > >
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