[postgis-users] Rain sensor --- Interpolation -- RASTER -- IDW

[Giuseppe Broccolo]

Hi Acaymo,

In some way, it is expected: the algorithm needs to loop on all the pixels
for the interpolation,
and this can be time consuming in case of large rasters, specially if you
consider that st_invdistweight
is a function implemented in PL/pgSQL.

Anyway, did you consider to split the raster in tiles, and run the
interpolation on the single tiles?

Hope this can help,
Giuseppe.

Il giorno sab 2 mag 2020 alle ore 19:00 caymo04 <caymo04 at fuerteguineo.eu>
ha scritto:

> Good afternoon everyone,
>
> I am trinig to interpolate on RASTER the no data values.
>
> We have 10 data from rain sensor and this sensor are geopositioned on the
> RASTER.
>
> How can I do the interpolation by weight in all RASTER?
>
> I tried to do with InvDistWeight4ma function but is very very very slowly.
>
> Any response will be very appreciated.
>
> Best regards and thanks you in advance.
>
> Acaymo.
>
>
>
> --
> Sent from: http://postgis.17.x6.nabble.com/PostGIS-User-f3516033.html
> _______________________________________________
> postgis-users mailing list
> postgis-users at lists.osgeo.org
> https://lists.osgeo.org/mailman/listinfo/postgis-users
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.osgeo.org/pipermail/postgis-users/attachments/20200502/8b684cd8/attachment.html>