-Used displacement modifier to create the lanscape
-3 slope materials and 3 elevation materials used.
-Slope detection achieved in node editor.
-Trees made with planes and particle systems (raw polys would overload the computer)
Just wanted to demonstrate the making of a procedural lanscape with a node material that places materials based on elevation and slope. And I say again, with the node editor, slope detection is indeed possible.
I knew I needed a quick way for the trees also, so using some objects that are planes with a leaves texture I made a long time ago and particle systems, I placed a whole array of trees without manually placing them.