[Proj] UTM Zone projection parameters to pass to pj_transform()

Ed McNierney ed at topozone.com
Mon Nov 28 15:43:00 EST 2005

David -

Those output numbers look like radians, not degrees.

	- Ed

Ed McNierney
President and Chief Mapmaker
TopoZone.com / Maps a la carte, Inc.
73 Princeton Street, Suite 305
North Chelmsford, MA  01863
ed at topozone.com
(978) 251-4242  

-----Original Message-----
From: proj-bounces at lists.maptools.org
[mailto:proj-bounces at lists.maptools.org] On Behalf Of Jacques, David -
Fort Worth, TX
Sent: Monday, November 28, 2005 3:13 PM
To: proj at lists.maptools.org
Subject: [Proj] UTM Zone projection parameters to pass to pj_transform()

The output from listgeo is this...

Corner Coordinates:
Upper Left    ( 360427.280,3278421.510)
Lower Left    ( 360427.280,3270801.510)
Upper Right   ( 367182.280,3278421.510)
Lower Right   ( 367182.280,3270801.510)
Center        ( 363804.780,3274611.510)

The corner coordinates in Decimal Degrees should be

Upper Left    ( 29.628626,-94.441707)
Lower Left    ( 29.559135,-94.441707)
Upper Right   ( 29.628626,-94.371019)
Lower Right   ( 29.559135,-94.371019

What I get is...


This prompted me to look at the PJ structure in debug mode (watch) In my
Visual Studio 7 IDE. I saw the following string in the description...

+	descr	0x0043802c "Universal Transverse Mercator (UTM)	Cyl, Sph
zone= south"	const char *

Funny how I didn't specify "south".

This led me to believe I need to specify more parameters.


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