[OSRS-PROJ] Donald Elliptic Projection for AT&T V&H Coordinates?

[Ed McNierney]

Duncan -
 
I will then thank your more successful Googling skills than mine - I didn't find it <g>.  I'll muck around and see if I can figure out a more standardized description of the projection.
 
     - Ed

	-----Original Message----- 
	From: Duncan Agnew [mailto:agnew at bilby.ucsd.edu] 
	Sent: Wed 11/27/2002 6:50 PM 
	To: osrs-proj at remotesensing.org 
	Cc: agnew at bilby.ucsd.edu 
	Subject: Re: [OSRS-PROJ] Donald Elliptic Projection for AT&T V&H Coordinates?
	
	


	There is a description of this projection at
	
	http://openmap.bbn.com/doc/api/com/bbn/openmap/util/VHTransform.html
	
	(at the bottom of the page). The code used is open-source (it appears)
	and can be downloaded; go to http://openmap.bbn.com/ for information.
	
	The actual conversion code contained inside the Java is from other sources,
	and it is clear that this is something that even AT&T had difficulty
	sorting out later.
	
	I leave it up to the more expert to add this to PROJ, and to reverse-
	engineer the ellipsoid used.
	
	Don't thank me, thank Google.
	
	Duncan Agnew
	
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