With regard to TdG's interest in erosion, I was thinking about doing a quick
test with an image map converted to a height_field.

The only problem here is that I don't recall if there was a way to edit the
pixel data in the image_map, or in the height_field, or to somehow use a
function {} or a 2D array to create an image or heightfield...

Or maybe a way to add/subtract / overlay onto the base image.
I can't use arrays in functions, otherwise I could do image_map {function
{array}}

It would be useful to not have to load an image, convert that to an array, use
that array to create a mesh, then use the algorithm I'm experimenting with to
edit the mesh.....

Does anyone have any ideas?

- BW

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