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<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>FYI, the current version of the EPSG
Guidance Note 7-2 presents the algorithm to do this (called topocentric
coordinates by the EPSG). If this is not in proj4 already, I would
support its inclusion. Also FYI, if the vertical dimension of topocentric
coordinates is ignored, the remaining horizontal coordinates define the
ellipsoidal orthographic projection. –Noel Zinn<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
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<p class=MsoNormal><b><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>From:</span></font></b><font size=2
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'>
proj-bounces@lists.maptools.org [mailto:proj-bounces@lists.maptools.org] <b><span
style='font-weight:bold'>On Behalf Of </span></b>Eran Burstain<br>
<b><span style='font-weight:bold'>Sent:</span></b> Thursday, October 23, 2008
4:55 AM<br>
<b><span style='font-weight:bold'>To:</span></b> proj@lists.maptools.org<br>
<b><span style='font-weight:bold'>Subject:</span></b> [Proj] Local Level</span></font><o:p></o:p></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
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<p class=MsoNormal style='margin-bottom:12.0pt'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'>Hi !<br>
Can I convert a point from geocentric to Local Level Projection (also called
Local Tangent Plane) ?<br>
It's only Rotation and Shift from the geocentric representation.<o:p></o:p></span></font></p>
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<p><font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>No
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