<HTML dir=ltr><HEAD><TITLE>Re: [Proj] Problem overlaying georeferenced images in Google,Maps(projection problem!)</TITLE>
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<DIV dir=ltr><FONT face="Times New Roman" color=#000000 size=2>I believe the easiest solution to that would be to correct that north shift by utilizing Rectifying Latitude for the International ellipsoid at the center of the area. Don't know if that's in the PROJ4 Toolkit, though ...</FONT></DIV>
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<DIV dir=ltr><FONT size=2>Cliff Mugnier</FONT></DIV>
<DIV dir=ltr><FONT size=2>LSU</FONT></DIV></DIV>
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<FONT face=Tahoma size=2><B>From:</B> proj-bounces@lists.maptools.org on behalf of support.mn@elisanet.fi<BR><B>Sent:</B> Sat 31-May-08 03:44<BR><B>To:</B> PROJ.4 and general Projections Discussions<BR><B>Subject:</B> Re: [Proj] Problem overlaying georeferenced images in Google,Maps(projection problem!)<BR></FONT><BR></DIV>
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<P><FONT size=2>More ideas...<BR><BR>The huge north shift, which is visible in your pictures, is usually due<BR>to the conversion between spherical and elliptical. There is a way to<BR>go around that, but how it should be done in your case.... ???<BR><BR>Regards: Janne<BR><BR>------------------<BR><BR>>Now, the results in Google Earth:<BR><BR>>The image before reproyecting (UTM zone 30 datum ED50)<BR>><A href="http://www.nebulared.com/tmp_geo/Balearic_Island_UTM_ED50.png">http://www.nebulared.com/tmp_geo/Balearic_Island_UTM_ED50.png</A><BR><BR>>The image reproyected<BR>><A href="http://www.nebulared.com/tmp_geo/Balearic_Island_Reprojected.png">http://www.nebulared.com/tmp_geo/Balearic_Island_Reprojected.png</A><BR><BR>>What's the problem?:<BR><BR>_______________________________________________<BR>Proj mailing list<BR>Proj@lists.maptools.org<BR><A href="http://lists.maptools.org/mailman/listinfo/proj">http://lists.maptools.org/mailman/listinfo/proj</A><BR></FONT></P></DIV></BODY></HTML>