[Proj] Geocentric vs. Geodetic latitude
feili at telus.net
Wed Apr 28 12:27:08 EDT 2004
In some satellite application people need geocentric and geodetic coordinate
system both. I am one of them.
----- Original Message -----
From: "Gerald Evenden" <gerald.evenden at verizon.net>
To: <proj at remotesensing.org>
Sent: Wednesday, April 28, 2004 8:28 AM
Subject: Re: [Proj] Geocentric vs. Geodetic latitude
> Search for the string 'geoc' in pj_fwd.c and pj_inv.c. P->geoc is the
> flag causing geocentric conversion. Conversion follows the 'if'
> I agree that geocentric is most likely a satellite data parameter and
> since I have not normally be involved with such data I have not
> had much contact with geocentric latitude.
> +geoc has been in proj.4 since Hector was a pup and I cannot remember
> what prompted me to include it. Must have sounded like a good idea
> at the time.
> On Apr 28, 2004, at 11:18 AM, Frank Warmerdam wrote:
> > Folks,
> > ...
> > 117dW 33d9'33.537"N
> > So, I think I am in the clear. I didn't find the actual geocentric
> > code
> > in PROJ.4, and had never used this +geoc option before.
> Jerry and the low riders: Daisy Mae and Joshua
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