Joining an array before using a displacement displacement map Stupid question, but here goes.  I am modelling a greyhound track.  I have used an array along a curve to create the track and am looking to use a displacement mask to create tracks in the procedural sand. I am now trying to get my head around how I can actually do this. I have applied the array and thought that the easiest solution would be to make the segments (of the quarter of the track that will be visible in the shot) into one piece, subdivide this with loop cuts and then use displacement. If that is the best way forward I am afraid I am failing at the first hurdle as I can't seem to join the segments.

Undoubtedly I am being dense but any advice would be welcomed.  

Thanks

Adrian
I'm not sure what your situation is without a .blend file, or at least some screenshots. The best advice I can think of is: Apply the array modifier before doing anything else. If your going to use a displacement map after, then I guess you'll need to UV unwrap again.
Hope this helps