I've added the Displacement Modifier to my object with a Wood texture for displace. How to change its location, rotation and scale (like you can do with image textures: Map a procedural texture like an image texture)? There are no mapping options in the Displace texture panels. I'd like to rotate the pattern pictured below, so it's mapped verticaly. How to achieve this?
If I got what you asked, you can do something (little) mapping the displacement as UV, then unwrapping the displaced mesh, and setting the mesh UV as modifier target. Then (eg) rotating the UV, the displacement rotates. Scaling the UV, the displacement scales.
then rotating the UV:
while to scale it on the mesh (horizontally, on the displaced surface, here a simple plane):
To scale it vertically, of course you just need to set the modifier's "strength".
Of course you can also see the edits in realtime, setting the modifier to adjust the edit cage to the modifier result: