[postgis-users] IDW - RASTER - ST_InvDistWeight4ma

caymo04 caymo04 at fuerteguineo.eu
Sat Apr 25 08:16:34 PDT 2020

Good morning everyone,

I need support about ST_InvDistWeight4ma.

Is it possible to do IDW to full band into the RASTER with only 8 pixels
with value?

I tried with:

UPDATE ch07.idwlpa SET rast=st_mapalgebra (rast,2,
                         'st_InvDistWeight4ma(double precision

But, the result is without IDW interpolation.

How can I do it with POSTGIS?
I would like to do IDW into POSTGIS.

Best regards and thanks a lot in advance.


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