First off, let me say that I am very impressed with World Machine and just love the interface. That is ingenius.
Now, for my question.
I use Xara to create contour lines from scanned maps. This works for paper maps where I know ahead of time the heights each lines represent, etc. But, to make 3d maps, it’s a whole 'nother story.
It looks like I have to use grey scales to indicate heights, but what color of grey equals what difference in altitude? Then, I could color in the contours.
Or, is there a means to take a jpg or bmp or whatever format graphic of a set of contour lines and have WM create a map from that?