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Re: OT Re: Constructed maps

Date:Friday, January 11, 2008, 22:48
In a message dated 1/11/2008 2:07:46 PM Central Standard Time,
rfmilly@MSN.COM writes:

> Well, hurrah, I've acquired an old terrestrial globe (16in. diam., no > stand, > but holes at N and S poles where one used to be)!! suitable for playing > with. I assume I'll either (1) have to paint over the whole thing, somehow > retaining the handy lat. and long. lines, then draw in the Cindu land > forms-- very challenging I suspect, or (2) make paper gores (with pre-drawn > land forms) to glue on, equally challenging I suspect. The Zompist website > has instructions for doing that, which I've tried, but getting the curvature > right is a mystery. I might try tracing outlines from the existing ones??? > > Does anyone know the geometrical qualities of a sphere? Are there formulae > for drawing those triangular shapes with curved sides? They are all > presumably arcs, but it would require a HUGE compass....or are they just > regular isosceles triangles (I doubt)?? Is there perchance some free or > inexpensive software that would help? I can do a lot of trial and error, of > course..... Maybe I should get in touch with the geography dept. at one of > the local colleges? > > Has anyone ever tried such a project? Any suggestions or hints would be very > welcome (reply privately I think). > > Thanks, Roger >
You could make a flat icosahedral (20 equilateral triangles) map, then connect the edges to make a rough globe. stevo </HTML>


Edgard Bikelis <bikelis@...>