<div dir="ltr"><div>- Oscar,</div>
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<div>Thanks for the reference. I did not have it!</div>
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<div>- Paul<br><br>On Sat, Sep 13, 2008 at 2:59 PM, OvV_HN <span dir="ltr"><<a href="mailto:ovv@hetnet.nl">ovv@hetnet.nl</a>></span> wrote:<br></div>
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<blockquote style="BORDER-LEFT: #ccc 1px solid; MARGIN: 0px 0px 0px 0.8ex; PADDING-LEFT: 1ex" class="gmail_quote"><br>----- Original Message ----- From: "Paul B. Anderson" <<a target="_blank" href="mailto:pbander@cavtel.net">pbander@cavtel.net</a>>
<div class="Ih2E3d"><br>To: "PROJ.4 and general Projections Discussions" <<a target="_blank" href="mailto:proj@lists.maptools.org">proj@lists.maptools.org</a>><br></div>Sent: Saturday, September 13, 2008 6:26 PM
<div class="Ih2E3d"><br>Subject: Re: [Proj] Unknown projection?<br><br><br></div>
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<blockquote style="BORDER-LEFT: #ccc 1px solid; MARGIN: 0px 0px 0px 0.8ex; PADDING-LEFT: 1ex" class="gmail_quote">One person who has researched the inverse Winkel Tripel formulas issue is Dr. Robert Schmunk <a target="_blank" href="http://www.giss.nasa.gov/staff/rschmunk.html">http://www.giss.nasa.gov/staff/rschmunk.html</a><br>
</blockquote><br><br></div>Let's not forget:<br><br>A GENERAL ALGORITHM FOR THE INVERSE TRANSFORMATION OF<br>MAP PROJECTIONS USING JACOBIAN MATRICES,<br>Cengizhan Ipbüker, I.Öztug Bildirici<br>Proceedings of the Third International Symposium Mathematical & Computational Applications<br>
September 4-6, 2002. Konya, Turkey, pp. 175-182<br>Istanbul Tech. University Faculty of Civil Eng., Div. of Cartography, Maslak Istanbul,<br>Turkey<br>Selcuk University, Faculty of Eng., Dept. of Geodesy & Photogrammetry, Konya,<br>
Turkey<br><a target="_blank" href="http://atlas.selcuk.edu.tr/paperdb/papers/130.pdf">http://atlas.selcuk.edu.tr/paperdb/papers/130.pdf</a><br><br>With a Newton iteration procedure for the inverse of Aitoff-Hammer, Winkel-Tripel and Mollweide.<br>
<br>Oscar van Vlijmen
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