NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: UTM to lat/lon formulas
From: George Huxtable
Date: 2003 Dec 13, 00:35 +0000
From: George Huxtable
Date: 2003 Dec 13, 00:35 +0000
Vic Fraenckel wrote- >The open source code on my web site contains the conversion functions you >are seeking. I completely understand your desire to "roll your own". I got >the UTM conversion stuff from a very interesting manual "Map Projections - A >Working Manual" which is the U.S. Geological Survey Professional Paper 1395 >written by John P. Snyder. Anyone interested in map projections needs to >have this book. Everything you need is laid out there. Grab the source code >from my site to use as somwhat of a reference and get the book and do your >thing. > >If I can be of any help please let me know. =========== Response from George- Vic's website is at www.windreader.com/geodesy Thank you, Vic, for being so helpful. The Snyder volume you mention is indeed one of the references given in Seldelmann's "Explanatory supplement to the Astronomical Almanac". So the open source code based on that might well give a clue, if the equations given in Seidelmann do indeed contain any errors. George. ================================================================ contact George Huxtable by email at george@huxtable.u-net.com, by phone at 01865 820222 (from outside UK, +44 1865 820222), or by mail at 1 Sandy Lane, Southmoor, Abingdon, Oxon OX13 5HX, UK. ================================================================