I have created this shaded relief image in arcmap (first image). Is there a way to paint part of it according to geology and keep the relief texture (like the green color on the second image)? Creating a different layer in order to paint it on another software (e.g. photoshop) will make the relief texture faint and not very visible, so I was wondering if I can do it through arcmap.
If I understand you correctly, it is easier to do this work in QGIS than ArcGIS, because you can adjust blending mode directly from layer properties in QGIS.
In this example, I have duplicated a geological vector layer (shapefile) from the table of content and used them as follows:
- The first Geo layer used layer blendeing mode of
Multiplywith transparency of 20% to see the hillshade from one lithological type of A. Then turned off all other lithologies.
- The second layer (Geo copy) used layer blendeing mode of
Normalwith transparency of 0% to hide the hillshade, and turnd off lithology A.
If you want to see the hillshade without any lithology, you can simply uncheck the lithologies that you don't want.
Not sure I understood your problem, but I think the following tutorial could help you : An alternative to overlaying layer tints on hillshades.
Instead of a tinted elevation model, you'd have to use a rasterized layer of your geological data.