[GRASS-user] Re: problem with v.patch

J. Brian Adams jb_adams at verizon.net
Fri Jun 20 13:00:34 EDT 2008

Sorry for the delay No, I was not able to fix the problem with  
v.patch.  Although I tried several different suggestions, none of them  
worked.  It still dropped some of the larger regions that were shared  
between the maps.  My only remaining idea, which I have not tried  
primarily because of the number of separate vector maps is to run  
v.patch on all of them, and then add the dropped regions one at a  
time.  This may be completely off base, but I wonder if it might have  
something to do with bounding boxes surrounding each vector map.  The  
box might cut the dropped region when we run v.patch.  Just a thought  
if anyone else reads this.

I did finish the task,  but using a less than optimal work around.  I  
converted each of the vector maps to a raster map, and then I patched  
them together.  As I said, less than optimal, but it got the job done.


On Jun 9, 2008, at 7:49 PM, Oliver Sonnentag wrote:

> Hi Brian, just wondering if you ever figured out why v.patch drops  
> boundary vector regions ....
> http://lists.osgeo.org/pipermail/grass-user/2008-March/044155.html
> I'm facing exactly the very same problem as described in your post  
> at the moment and I can't figure how to get this vector maps v.patch- 
> ed correctly.
> In advance, thanks a lot.
> Regards,
> Oliver

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