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I believe if I use "proj -I +init=nad83:4302 +units=us-ft" with the input file it should work. I have tested the conversions against the corpscon program and they work. Thank you for your help.<br><br>-Daniel <br><br>> From: ovv@hetnet.nl<br>> To: proj@lists.maptools.org<br>> Date: Sat, 5 Sep 2009 11:06:32 +0200<br>> Subject: Re: [Proj] Conversion help<br>> <br>> ----- Original Message ----- <br>> From: "` `" <teletautala@hotmail.com><br>> To: <proj@lists.maptools.org><br>> Sent: Thursday, September 03, 2009 9:17 PM<br>> Subject: [Proj] Conversion help<br>> <br>> <br>> <br>> I need to convert waypoints from State Plane, NAD 83 4302 - Utah Central, <br>> U.S. Feet to Geographic, NAD 83. Here is some data:<br>> original data:<br>> 7276845.40800,1473458.11800<br>> nad2nad conversion (nad2nad -i spcs=4302,rev,83,feet -o 83,rev -w7 <br>> reversedConversion.txt | head -1):<br>> 40d8'56.1498803"N 117d22'21.7731358"W,1473458.11800<br>> data converted with corpscon:<br>> 40 17 43.03866,112 05 54.83550<br>> <br>> <br>> <br>> Reply:<br>> <br>> I think I've got part of the solution.<br>> Somehow your x was interpreted as zero.<br>> If you convert x = 0; y = 7276845.40800; to LCC without further grid <br>> interpolation, then you'll get<br>> lat = 40d 08m 56.14988s, lon = -117d 22m 21.77314s<br>> The Corpscon values are correct for SPCS 4302 and x = 1473458.11800; y = <br>> 7276845.40800;, also without grid interpolation.<br>> <br>> Oscar van Vlijmen<br>> <br>> <br>> <br>> _______________________________________________<br>> Proj mailing list<br>> Proj@lists.maptools.org<br>> http://lists.maptools.org/mailman/listinfo/proj<br><br /><hr />Windows Live: Make it easier for your friends to see what you’re up to on Facebook. <a href='http://windowslive.com/Campaign/SocialNetworking?ocid=PID23285::T:WLMTAGL:ON:WL:en-US:SI_SB_facebook:082009' target='_new'>Find out more.</a></body>
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