[Proj] Geocentric vs. Geodetic latitude

Gerald Evenden gerald.evenden at verizon.net
Wed Apr 28 11:28:06 EDT 2004

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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