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Month Index: June, 1999


From:     Adam Miller <nghtdrud@??????.net>
Date:     Thu, 03 Jun 1999 22:03:05 -0500
Subject:  Re: Various things about Practical Planetology
Kelly Pedersen wrote:
 
[snip]
> If anyone knows where I might find a description of an
> Eckert Equal Area Projection, or has a better idea of
> how to visualize the maps as globes, please let me
> know.

	Ok, I did a search for Eckart Equal Area Projection, and found it at:

http://www.utexas.edu/depts/grg/gcraft/notes/mapproj/mapproj.html

	(it's full of various types of map projection)
	It's described as: The Eckert IV projection, used for world maps, is a
pseudocylindrical and equal-area. The central meridian is straight, the
180th meridians are semi-circles, other meridians are elliptical. Scale
is true along the parallel at 40:30 North and South. 

	So basically touch the two hemispheres together and stretch the top &
bottom to poles to get a globe.  I think the problem you're running into
is one hand not knowing what the other is doing; the writers not working
closely with the cartagraphers.  Not all that uncommon of an error,
actually.
	To solve Radole, imagine a band of mountains & habital area curving
around the hemispherical areas of the map; mountains on the dark side
(left) and the habitable area on the light side (right).  Flax is solved
by simply ignoring the one sentence locating the cities; chalk it up to
bad reporting on the part of explorers.  Hope that helps.
 
Night Druid


Previous Message: Annoucement: New Ships
Next Message: Jammers:Chapter 3, Turns 21 & 22 Summary
Month Index: June, 1999

SubjectFromDate (UTC)
Various things about Practical Planetology    Kelly Pedersen    03 Jun 1999 23:13:19
Re: Various things about Practical Planetology    Adam Miller    04 Jun 1999 03:03:05

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