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<DIV>Dear Michael</DIV>
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<DIV>You need to tell OL which projection to request in within the map object. This is how I do it:</DIV>
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<DIV>var mapoptions = {<BR> maxExtent: new OpenLayers.Bounds(773500, 4555450, 2602100, 6384050),<BR> units: 'm',<BR> projection: "EPSG:2193",<BR> };<BR> map = new OpenLayers.Map( 'map',mapoptions );</DIV>
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<DIV>Then my layer is something like this:</DIV>
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<DIV>var topochwms = new OpenLayers.Layer.WMS( "Topos (Chathams)",<BR> "<A href="http://myserver/cgi-bin/gsswms.exe">http://myserver/cgi-bin/gsswms.exe</A>?",<BR> {layers: ['ci250k','ci50kcitm'], transparent: 'true',format: "image/png"},<BR> {singleTile: true, isBaseLayer: true, visibility: true} );</DIV>
<DIV>map.addLayer(topochwms);</DIV>
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<DIV>regards,</DIV>
<DIV> </DIV>
<DIV>Robert</DIV>
<DIV><BR>>>> "Michael G." <michael.gajda@tu-dortmund.de> 11/08/2011 11:41 a.m. >>><BR>Hi,<BR><BR>since a couple of days we try visualize data from a postgis database using<BR>mapserver and openlayers. As far as we know is our postgis data in EPSG:25832<BR>and our mapfile for mapserver looks like this:<BR><BR><A href="http://dpaste.com/hold/591626/">http://dpaste.com/hold/591626/</A><BR><BR>Now we have created an index.html containing the following JS snippet:<BR><BR><A href="http://dpaste.com/hold/591627/">http://dpaste.com/hold/591627/</A><BR><BR>We can test the WMS using a direct WMS URL to our MapServer and asking for<BR>EPSG:25832 and the correct extends, and it displays the map just fine<BR>(Everything is protected so I cannot provide this URL here).<BR><BR>If we try to display the map using the openlayers code above we do not see<BR>anything at all. You can zoom and move it around but that's<BR>everthing you get with openlayers. Networkdebugging tools tell me, that<BR>OpenLayers by default is requesting that google projection of EPSG:3867. But<BR>even providing coordinates that should somehow be in Dortmund it does only<BR>display the backgroundcolor.<BR><BR>Maybe you can help me clearing up a few things. Like the list of projections<BR>in 'wms_srs' is what MapServer provides via WMS. And the PROJECTION entry on<BR>the 'LAYER' level should be set to the projection of my data. Correct? And<BR>the PROJECTION on the MAP level is ignored? Does MapServer automatically<BR>convert the coordinates? MapServer requires to have EXTEND set. Which<BR>projection should I use? The one defined at MAP level?<BR><BR>Best regards,<BR>Michael<BR>_______________________________________________<BR>mapserver-users mailing list<BR>mapserver-users@lists.osgeo.org<BR><A href="http://lists.osgeo.org/mailman/listinfo/mapserver">http://lists.osgeo.org/mailman/listinfo/mapserver</A>-users<BR></DIV><br><br>
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