[mapserver-users] ms_newprojectionobj

Sven Schroeter schroeter at netgis.de
Fri Jul 3 02:51:19 PDT 2009


Hi,

I'm using php-mapscript to project a point from epsg:31466 
(Gauss-Krueger-Zone2) to epsg:4326 (WGS84):

//create point
$qPoint = ms_newPointObj();
$qPoint->setXY(2521189,5541667);

 // Calculate -> WGS84
$projInObj = ms_newprojectionobj("init=epsg:31466");
$projOutObj = ms_newprojectionobj("init=epsg:4326");
$qPoint->project($projInObj, $projOutObj);
$WGS_X = round($qPoint->x,6);
$WGS_Y = round($qPoint->y,6);
echo 'WGS84: <strong>'.$WGS_Y.','.$WGS_X.' </strong>';

I let the script running on two diferent Servers with the same 
Mapserver-Installation:

The first Server calculates the correct coordinates:
WGS84: 50.010907,6.295043

http://maps.google.de/maps?f=q&source=s_q&hl=de&geocode=&q=50.010907,6.295043&t=h&ie=UTF8&ll=50.010907,6.295043&spn=0.009542,0.015407&z=16&iwloc=near


The second server calculates the wrong coordinates:
WGS84: 50.012688,6.295651

http://maps.google.de/maps?f=q&source=s_q&hl=de&geocode=&q=50.012688,6.295651&t=h&ie=UTF8&ll=50.012688,6.295651&spn=0.009542,0.015407&z=16&iwloc=near

Both Servers have the same Mapscriptversion:
MapServer version 5.0.2 OUTPUT=GIF OUTPUT=PNG OUTPUT=JPEG OUTPUT=WBMP 
OUTPUT=PDF OUTPUT=SWF OUTPUT=SVG SUPPORTS=PROJ SUPPORTS=AGG 
SUPPORTS=FREETYPE SUPPORTS=WMS_SERVER SUPPORTS=WMS_CLIENT 
SUPPORTS=WFS_SERVER SUPPORTS=WFS_CLIENT SUPPORTS=WCS_SERVER 
SUPPORTS=SOS_SERVER SUPPORTS=FASTCGI SUPPORTS=THREADS SUPPORTS=GEOS 
INPUT=JPEG INPUT=POSTGIS INPUT=OGR INPUT=GDAL INPUT=SHAPEFILE

What is wrong with the second installation? Is there a different 
geosversion, how can I test this?
Thanks
Sven






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