I've made a procedural terrain using a SOP for displacement and later I applied a Mantra surface.
Now I'd like to color the terrain according to the slope profile, so that, for example, if the slope is <45° it's green, or else red.
I've tried using the globalNNormalBumpMap node to gather the normals and drive a ramp color through it without success (the object color was unaffected by my attempts).
Any chance to get some examples or hints? Thanks a lot!

Think this video will answer all your questions and more!

https://www.sidefx.com/index.php?option=com_content&task=view&id=2500& [sidefx.com]

Thanks a lot, that is very helpful! And to say that I've browsed the tutorials and missed that… ops: