[GRASS-user] Number of centroids outside area: difficulty with cleaning

Markus Metz markus.metz.giswork at gmail.com
Mon Apr 15 02:57:14 PDT 2013

On Mon, Apr 15, 2013 at 11:05 AM, RichardC <richtcooper at hotmail.com> wrote:
> Here's the file link:
> http://edcftp.cr.usgs.gov/pub/data/gtopo30hydro/as_bas.tar.gz
> <http://edcftp.cr.usgs.gov/pub/data/gtopo30hydro/as_bas.tar.gz>
> I'd be very interested in your findings. When I ran v.build outputting an
> error file, all of the errors seem to be concentrated along a particular
> latitude. As a work around, I extracted the area of my interest (SEAsia) and
> was able to reproject with identical feature geometry.

You need to use GRASS 7 and there v.proj with the -w flag to tell the
proj4 library to not wrap to -180,180. This produces a clean
reprojected vector map for me.

Markus M

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