Re: formula for great circle computation

From:         kls@ohare.Chicago.COM (Karl Swartz)
Organization: Chicago Software Works, Menlo Park, California
Date:         13 Oct 95 01:30:22 
References:   1 2 3 4
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>I talked to one of the programmers on on our "Phoenix" flight
>planning system and was surprised to find that the Phoenix system
>used an algorithm that took into account the fact that the Earth is
>oblate rather than spherical.

The software in the PROJ.4 package I mentioned takes this into account
as well, with not just one model for Earth's real shape but an amazing
41 different choices, at least in the version I have.

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