[postgis-users] How to IDW interpolation from points in PostGIS

Rémi Cura remi.cura at gmail.com
Fri Mar 4 01:43:54 PST 2016


Hey,
not sure it is what you asked for,
but you can use GDAL.
(here
<https://jacintoestima.wordpress.com/2013/09/10/idw-interpolation-from-csv-using-gdal/>for
instance).

If you would like an interface for easier tuning,
simply use QGIS, (Raster/Interpolate).

Of course all this goodies work on postgis raster thanks to gdal driver I
guess

Cheers,
Rémi-C

2016-03-04 4:09 GMT+01:00 chingchai humhong <chingchai.h at gmail.com>:

> Dear All,
> I'm trying to find PostGIS Raster functions supports the Inverse Distance
> Weighted interpolation method (IDW) and Kriging interpolation method.
> I'm especially trying to generate a temperature map from a geometry
> table(temperature values) with point locations in PostGIS.
> Can someone please point me in the right direction?
> Thank you.
>
> --
> Chingchai  Humhong
> Regional Center of Geo-Informatics and
> Space Technology, Lower Northern Region
> Naresuan University Phitsanulok 65000
> Lat:16.742496, Lon:100.191605
> Map:
> http://maps.googleapis.com/maps/api/staticmap?center=16.742496,100.191605&zoom=14&size=400x400&sensor=false
>
>
>
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