[Qgis-user] How to change raster values from another raster

[Wouter Impens]

Hi Vivien,

The tool ''r.patch'' should do the trick. More info on
https://grass.osgeo.org/grass76/manuals/r.patch.html

Greetings
Wouter


Op wo 10 apr. 2019 om 11:55 schreef vivien.mai at hotmail.fr <
vivien.mai at hotmail.fr>:

> Hello everyone,
>
> I'm going to introduce myself quickly. I'm a french researcher in Geology
> and I use a lot Qgis for my work. I don't know if it's the good forum to
> ask
> for support on Qgis so tell me if another forum is more appropriate.
>
> I have a DEM with a dame lake in the middle. I need to have the topography
> under the lake level so I built another DEM with the topography under the
> lake level. This new DEM has the same projection than the first one but not
> the same resolution.
>
> I want to change the elevation values of the fist DEM  using the values of
> the new DEM. I have already drawn a polygone of the area where I want
> change
> the values (the lake).
>
> How can I do this? Can I use a raster calculator?
>
> Thank you in advance for your answers.
>
>
> Vivien
>
>
>
> --
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