In QGIS, I would like to save a WMS layer representing the pHx10(ranging from 0 to 140 https://maps.isric.org/mapserv?map=/map/phh2o.map from ISRIC) using an area in Belgium as a map extent.

I saved the WMS layer using "save as", GeoTIFF as format, resolution of 1m and the selected map extent. At first, the output really looks like a part of the WMS layer which is what I want. However, the values of the raster are divided into bands Red, Green and Blue, each of them having different values. When I perform a classification on the results, it gives totally different values from the WMS layer and I can not tell wich bands represents the pH and why the result is divided in 3 bands.

The first picture represents the WMS layer with normal pHx10 values. The second image is the saved raster with the right color but with the 3 bands (test_pH layer). The third picture is result of the classification when I use band 2 for example (values outranging pHx10 values).

How can I get a raster with the right pH values corresponding to the color/range of picture 1 and 2?

Picture 1

Picture 3

Picture 2

  • 1
    A WMS service returns a picture of the data you can not reliably extract meaningful information from it - if you require actual data you must use a WFS or WCS endpoint to fetch actual data.
    – Ian Turton
    Dec 8, 2021 at 8:37

1 Answer 1


Simply right-click the initial (WMS) layer and copy the style, then paste it on the exported layer.

The color settings (highlighted in red) are made automatically when copying the style: enter image description here

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.