[Proj] Re: Discovery: libproj4 stmerc = French Gauss-Laborde projection
Gerald I. Evenden
gerald.evenden at verizon.net
Wed Jun 14 11:42:40 EDT 2006
On Wednesday 14 June 2006 1:12 am, Strebe at aol.com wrote:
> You might contact Dr. David E. Wallis. He devised a much simpler method
> than Dozier's. I've implemented it for the full-ellipsoid. You can see a
> plot of an earth-like ellipsoid here:
> The method works for arbitrary eccentricities. Contact me privately if
> you're interested. Since it is Dr. Wallis's invention, I'll put you in
> contact with him.
Dr. Wells has a web page relating to the projection:
that a Google search on his name will return. Found this site several years
ago during a previous discussion about tmerc. To me, the web page appears
unchanged and the "Publication Pending" notice at the top is certainly taking
a long time.
I should post him a letter for further information and follow up with a phone
call if no response.
The description of the equation present does not make much sense unless what
looks like p in the tan term is not the p described as colatitude. Again,
the first line says p,lambda is the colatitude and longitude yet the
description following the formula talks about a p for the Elliptic Integral
of the second kind.
I must be missing something.
Jerry and the low-riders: Daisy Mae and Joshua
"Cogito cogito ergo cogito sum"
Ambrose Bierce, The Devil's Dictionary
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