[GRASS-user] Use of Postgres/PostGIS with GRASS

[Aren Cambre]

Wow, I don't know how I missed that. I searched a lot and all I came up with
were ways to import PostGIS data into GRASS.

Aren

On Fri, Feb 25, 2011 at 1:31 AM, Hamish <hamish_b at yahoo.com> wrote:

> Aren wrote:
> > Wait, so GRASS can read directly from PostGIS tables? I thought
> > you had to import all the data into GRASS first?
>
> check out the new v.external module.
>
> http://grass.osgeo.org/grass64/manuals/html64_user/v.external.html
> http://grass.osgeo.org/grass64/manuals/html64_user/vectorintro.html
>
> and the v.external.out module in GRASS 7-dev.
>
> note this is about the geometry data, the attribute data could
> already be stored in a plain postgres DB since GRASS 5.7.
>
>
> also there is a new r.external module, combine that with GDAL's
> `gdalbuildvrt` Virtual raster maps (eg *.tif) and cut out a whole
> slew of middle-steps and disk writes.
>
>
> don't expect these virtual maps to work as well as native maps
> of course, but they shouldn't be buggy either.
>
>
> Hamish
>
>
>
>
>
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