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OT Re: Constructed maps

From:Roger Mills <rfmilly@...>
Date:Friday, January 11, 2008, 19:50
Way back on 6/21/07 in response to Rik Roots' magnificent--

>> >>
I wrote:
> I've tried on occasion to do similar maps by hand of my planet Cindu, but > between inertia, absent or fading skills and lack of a good cartography > text (with all the necessary formulae, tables etc.), nothing satisfies me. > I really want to make a globe, but am not sure how to go about it.
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


David J. Peterson <dedalvs@...>
Mark J. Reed <markjreed@...>
Rik Roots <rik@...>
Lars Finsen <lars.finsen@...>