[GRASS-user] exporting areas to shapefiles without filling holes

[Moskovitz, Bob]

Hello Hamish,

I had a possibly related problem with a vector that went through v.clean.  I filed this ticket:  http://trac.osgeo.org/grass/ticket/397.

I noticed that layer 0 had the filled holes while layer 1 was the good polygons.  v.clean seemed to merge those two layers.  With Markus M's fix, I solved my problem.  Which reminds me...should I close this ticket since it works for me?

Bob

Bob Moskovitz
Research Analyst I
Seismic Hazard Evaluation Project
California Geological Survey
http://gmw.consrv.ca.gov/shmp

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> -----Original Message-----
> From: grass-user-bounces at lists.osgeo.org
> [mailto:grass-user-bounces at lists.osgeo.org]On Behalf Of Hamish
> Sent: Thursday, April 09, 2009 12:02 AM
> To: grass list
> Subject: [GRASS-user] exporting areas to shapefiles without filling
> holes
> 
> 
> Hi,
> 
> I've got a grass vector map containing some areas with holes. It's a
> polygon of a river containing some islands; it looks nice in grass,
> centroids with cat in the wet parts, no centroids in the islands.
> There is no DB table.
> 
> after exporting with 'v.out.ogr type=area' to a shapefile, when I load
> the shp file into QGIS 0.8.1 I see that all the holes have 
> been filled in.
> The boundaries are still intact. using qgis's editing tools I can cut
> them out, but it takes a bit of manual labour to fix them all.
> 
> what am I doing wrong?
> 
> 
> thanks,
> Hamish
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