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

[Ed McNierney]

David -

What are the input and output values you are using, and how are you
concluding they're not correct?

	- 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 2:28 PM
To: proj at lists.maptools.org
Subject: [Proj] UTM Zone projection parameters to pass to pj_transform()

Dear list...

I am using proj4.4.9 and libgeotiff to read multiple geotiff headers in
order to  reproject the bounding box from UTM to geographic for an
inventory tracking map.
 However my sample output points from the pj_transform() function are
not correct.

 Below are the input & output coordinate systems, each with their
corresponding line in the epsg file.

  //<26915> +proj=utm +zone=15 +ellps=GRS80 +datum=NAD83 +units=m
+no_defs  <>
  static char *utm15n_parms[] =
{"proj=utm","zone=15","ellps=GRS80","datum=NAD83","units=m","no_defs"};

  //<4326> +proj=longlat +ellps=WGS84 +datum=WGS84 +no_defs  <>
  static char *ddwgs84_parms[] =
{"proj=longlat","ellps=WGS84","datum=WGS84","no_defs"};


What other parameters are needed for the UTM coordinate system ?  
Its supposed to be UTM Zone 15N NAD83 GRS80


Regards


David



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