After some thought, you may achieve what you want by resampling the file to
a 5km grid size with the Resampling.max option:

https://rasterio.readthedocs.io/en/latest/topics/resampling.html

https://rasterio.readthedocs.io/en/latest/api/rasterio.enums.html#rasterio.enums.Resampling.max

You can then store the centroid of the grid cell and the value in a
database.

On Mon, Dec 27, 2021, 1:45 PM Luca Bertoncello <[email protected]> wrote:

> Am 27.12.2021 um 20:20 schrieb Alan Snow:
>
> Hi Alan,
>
> thank you very much for your answer!
>
> > You may be looking for clip/mask:
> >
> >
> https://rasterio.readthedocs.io/en/latest/topics/masking-by-shapefile.html
> >
> > https://corteva.github.io/rioxarray/stable/examples/clip_geom.html
> >
> > After clipping, you can use numpy to do the sum.
>
> As I sayd, I'm really new to GDAL.
> I just have these TIFF-files and can't unterstand, from the pages you
> linked, how can I split alle these files in little tiles of a given size.
> Maybe can you give me an example?
>
> Thanks a lot
> Luca Bertoncello
> ([email protected])
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