[Proj] Lambert Conformal Conic

Karney, Charles ckarney at Sarnoff.com
Sun Apr 26 19:01:16 EST 2009

Another example of frozen-in approximate constants...

geotrans (thru at least version 2.4.2) defines the latitude of true
scale for the UPS projection as 81.114528 (see definition of
MAX_ORIGIN_LAT in ups/ups.c).  However, if we assume that UPS is defined
as having a scale of 0.994 at the pole, then the latitude of true scale
is really 81.11451786859362545 or so.

I reported this to the geotrans maintainers in July of last year and
they declined to fix it because doing so would cause their (presumably
incorrect) tests to fail!

Charles Karney <ckarney at sarnoff.com>
Sarnoff Corporation, Princeton, NJ 08543-5300

Tel: +1 609 734 2312
Fax: +1 609 734 2662

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