I am a high school computer teacher and am interested in using pov-ray with
my students to model the planet earth.  I have been successful in creating a
cut-away view of the earth and have created an animation showing the earth
rotating into the night complete with the appearance of city lights. I am
also working on a global weather simulation which has a long way to go.  My
question is about the possibility of wrapping a height field of the earths
surface topography onto a spherical shape.  I would like my students to be
able to experiment with issues like the difference between global elevations
as they really are compared to pictures and illustrations which exaggerate
the vertical scale. Is there a way to do this?

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