[Proj] Ellipsoid data sources

OvV_HN ovv at hetnet.nl
Mon Jan 12 11:15:14 EST 2009

There are more sources with 200+ ellipsoids, e.g. the ESRI software and the 
ArcGIS documentation.
That's not so difficult: about 50+ traditional ellipsoids, and the adjusted 
ellipsoids for all Minnesota and Wisconsin counties, plus the mostly sphere 
definitions for extraterrestrial bodies.

Strasser: probably?:

Georg Straßer
 Ellipsoidische Parameter der Erdfigur (1800-1950)
München 1957, ISBN 3 7696 8109 6

Oscar van Vlijmen

----- Original Message ----- 
From: "Clifford J Mugnier" <cjmce at lsu.edu>
To: <geraldi.evenden at gmail.com>; "PROJ.4 and general Projections 
Discussions" <proj at lists.maptools.org>
Sent: Monday, January 05, 2009 8:25 PM
Subject: Re: [Proj] Ellipsoid data sources

The largest I have ever seen in one place that is published is Georg 
Strasser's Ph.D. dissertation from the 1960s, but I don't know if it's 
available on the internet.  Of course, it doesn't have the ones listed after 
that date of publication.  I think it contained over 200 ellipsoids  ...

I'm writing this from out of town, so I can't put my finger on my copy for a 
week or so.

Cliff Mugnier


From: proj-bounces at lists.maptools.org on behalf of Gerald I. Evenden
Sent: Fri 02-Jan-09 11:08
To: PROJ.4 and general Projections Discussions
Subject: [Proj] Ellipsoid data sources

Because I was refurbishing the GEOD_ELLIPS structure array of standard earth
ellipse constants with its current 54 entries I seem to recall a seeing a
list that may have been longer.  However browsing the normal list of 
has turned up nothing.

Does anyone have info on a well vetted and comprehensive list of earth
ellipsoid constants.


The whole religious complexion of the modern world is due
to the absence from Jerusalem of a lunatic asylum.
-- Havelock Ellis (1859-1939) British psychologist
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