[Proj] Conversion help

[OvV_HN]

----- Original Message ----- 
From: "` `" <teletautala at hotmail.com>
To: <proj at lists.maptools.org>
Sent: Thursday, September 03, 2009 9:17 PM
Subject: [Proj] Conversion help



I need to convert waypoints from State Plane, NAD 83 4302 - Utah Central, 
U.S. Feet to Geographic, NAD 83.  Here is some data:
original data:
    7276845.40800,1473458.11800
nad2nad conversion (nad2nad -i spcs=4302,rev,83,feet -o 83,rev -w7 
reversedConversion.txt | head -1):
    40d8'56.1498803"N    117d22'21.7731358"W,1473458.11800
data converted with corpscon:
    40 17 43.03866,112 05 54.83550



Reply:

I think I've got part of the solution.
Somehow your x was interpreted as zero.
If you convert x = 0; y = 7276845.40800; to LCC without further grid 
interpolation, then you'll get
lat = 40d 08m 56.14988s, lon = -117d 22m 21.77314s
The Corpscon values are correct for SPCS 4302 and x = 1473458.11800; y = 
7276845.40800;, also without grid interpolation.

Oscar van Vlijmen