[Qgis-user] RASTER RESOLUTION REDUCING

Emma Hain emma at north-road.com
Mon May 13 18:19:36 PDT 2024


Hi Nuno
Apologies in advance, I am no raster specialist, but perhaps try using some
of the other tools such as Grass: r.resamp.stats

To get the information, would the GDAL Raster Information tool
<https://docs.qgis.org/3.34/en/docs/user_manual/processing_algs/gdal/rastermiscellaneous.html#raster-information>
assist?

Cheers
Em

On Tue, 7 May 2024 at 23:16, Nuno Manuel de Figueiredo de Santos Loureiro
via QGIS-User <qgis-user at lists.osgeo.org> wrote:

> Dear all,
>
> I need to reduce the resolution of a raster, from a 30 meter pixel to a
> 2500 meter pixel.
> Performing this operation via "Creating new layers from an existing layer"
> and using the "Resolution" raster parameter is very easy.
> But the value of the new 2500 meter grids is not the average of the values
> ​​of the 30 meter grids.
>
> How can I determine that in the destination grids its value is the average
> of the values ​​in the original grids?
>
> Suggestions will be very welcome!
>
> Grateful,
>
> Nuno
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Emma Hain — Product Manager/Senior GIS Analyst
emma at north-road.com
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