Quote Originally Posted by icosahedron View Post
I've been looking at Ascension's Planet tutorial (again ) and I'm trying to replicate the land colouration of his Earthlike planet in Gimp.

Without success.

With a few clicks of the mouse, using some form of gradient overlay, Ascension takes a greyscale cloud on his land area and converts it to a coloured terrain that merges from white ice at the poles, through a green temperate zone, to a yellow desert at the equator.

Can anyone give me step-by-step instructions on how to do this in Gimp, cos it's got me beat?

Thanks.
I don't have time to test it right now.. but if you already have the height map, you need to create (or find) a custom Gradient that goes from one end of the spectrum of color to the other. Then, on your image, select the heightmap (or a copy so you have the original!!!) and select Color->Gradient Map or something like that... This will take your b/w image and map the gradient you are using based on the colors.