Looks like they may have added a towgs84 parameter to the proj definition for 31370:<br><br><a href="http://postgis.refractions.net/pipermail/postgis-commits/2008-May/000283.html">http://postgis.refractions.net/pipermail/postgis-commits/2008-May/000283.html</a><br>
<br>That would likely explain the shift - the documentation probably hasn't been updated. <br><br><div class="gmail_quote">On Sat, Apr 18, 2009 at 1:53 PM, geep999 <span dir="ltr"><<a href="mailto:geep999@yahoo.co.uk">geep999@yahoo.co.uk</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"><br>
Hi,<br>
I have own-compiled gdal-1.6.0 on Linux - Slackware 12.2.<br>
The documentation for gdalwarp - <a href="http://www.gdal.org/gdaltransform.html" target="_blank">http://www.gdal.org/gdaltransform.html</a> - shows<br>
an example and a result:<br>
Simple reprojection from one projected coordinate system to another:<br>
gdaltransform -s_srs EPSG:28992 -t_srs EPSG:31370<br>
177502 311865<br>
Produces the following output in meters in the "Belge 1972 / Belgian Lambert 72" projection:<br>
244510.77404604 166154.532871342 -1046.79270555763<br>
<br>
My gdaltransform (gdal-1.6.0) gives a different result:<br>
gdaltransform -s_srs EPSG:28992 -t_srs EPSG:31370<br>
177502 311865<br>
244422.238366377 165970.24545029 0<br>
<br>
Is the example wrong? Is my gdal-1.6.0 somehow faulty?<br>
Can anybody duplicate this or explain the difference?<br>
<br>
Cheers,<br>
Peter<br>
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