[GRASS-user] Re: v.to.rast only rasterizes part of polygon

Jamie Adams jaadfoo at gmail.com
Wed Oct 1 22:06:47 EDT 2008


Hmmm, the mailing list archive doesn't show any text.  Here goes without
attachments.......

Apologies if this came through before.....

On Wed, Oct 1, 2008 at 4:29 PM, Jamie Adams <jaadfoo at gmail.com> wrote:

> Hello all,
>
> I'm having an issue with v.to.rast when converting a SRTM water body
> database (SWBD) shapefile to a raster.  I've imported the file using
> v.in.ogr with no problems, but when I do v.to.rast, it only converts a
> portion of the largest polygon.   I've attached screenshots from QGIS, one
> of the source vector and another with the output raster layered on top.   As
> you can see, it's not a region issue and there is no mask present.  The
> region is set to the extent and resolution of the SRTM tile for that area.
>
> command:
> v.to.rast input=w123n37n_sub output=test2 use=val
>
> The "_sub" suffix is because I filtered the original file where FACC_code =
> BA040.  I've tried doing the filtering with ogr2ogr beforehand and importing
> the subset, as well as importing the full shapefile and using v.extract.
> The end raster was the same.
>
> Thanks!
>
> -Jamie
>
> source file:
> ftp://e0srp01u.ecs.nasa.gov/srtm/version2/SWBD/SWBDwest/w123n37n.zip
>
> If you can't view the attachments:
> http://picasaweb.google.com/jaadfoo/Grass?authkey=jXvWPmZdHMc#
>
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