[postgis-users] Raster to Polygon vector cell

Andreas Forø Tollefsen andreasft at gmail.com
Mon Aug 23 06:33:55 PDT 2010


Hi

Thank you for your suggestions on reading material.
I will give it a try. Thanks.

Andreas

2010/8/23 Pierre Racine <Pierre.Racine at sbf.ulaval.ca>

>  Andreas,
>
>
>
> This is one of the operation WKT Raster was made for. See the tutorial:
>
>
>
> http://trac.osgeo.org/postgis/wiki/WKTRasterTutorial01
>
>
>
> You will need to compile (if you are on Linux) or install (on Windows) the
> WKT Raster PostGIS extension. You import your shapefiles, you import your
> raster, then you do the proper query.
>
>
>
> Pierre
>
>
>
> *From:* postgis-users-bounces at postgis.refractions.net [mailto:
> postgis-users-bounces at postgis.refractions.net] *On Behalf Of *Andreas Forø
> Tollefsen
> *Sent:* 21 août 2010 14:49
>
> *To:* postgis-users at postgis.refractions.net
> *Subject:* [postgis-users] Raster to Polygon vector cell
>
>
>
> Hi.
>
>
>
> I have been searching for a way to join raster values to polygons.
>
> In my case there is only one raster value within each polygon, and I would
> like this value to be joined into a column in the polygon table.
>
> The process would in other GIS programs probably look like this:
>
>
>
> Raster Data -> Point Features -> Spatial Join to Polygons (with raster
> value as new column for each polygon).
>
>
>
> Any ideas how one would formulate this?
>
>
>
> Thanks.
>
> Andreas
>
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