[OpenLayers-Users] Can't transform lat/long to a projection

[Eric Lemoine]

On Monday, July 13, 2009, winfield.dave <winfield.dave at gmail.com> wrote:
>
> Hi all,
>
> Essentially, I'm having a problem converting some lat/long values I get back
> from a webservice onto my map. The map is using EPSG:3395, so I thought code
> like this would work.
>
> <!-- at the top -->
> var latLonProj = new OpenLayers.Projection("EPSG:4236");
> var osmProj = new OpenLayers.Projection("EPSG:3395");
>
> <!-- code that matters -->
> var markers = new OpenLayers.Layer.Markers( "Markers" );
> map.addLayer(markers);
>
> var ll = new OpenLayers.LonLat(51.644715, -0.0327);
> ll.transform(latLonProj, osmProj);
>
> <!-- code for the icon and adding to the map -->
> var size = new OpenLayers.Size(10,17);
> var offset = new OpenLayers.Pixel(-(size.w/2), -size.h);
> var icon = new
> OpenLayers.Icon('http://boston.openguides.org/markers/AQUA.png',size,offset);
> markers.addMarker(new OpenLayers.Marker(ll,icon));
>
> I can do an alert on the ll.lon and ll.lat values AFTER the transform and
> they're the same as what I passed into the constructor.
>
> I thought maybe I had the lon/lat values reversed, so I changed the order of
> the parameters in the LonLat constructor, but it did not help.  I was also
> under the impression that EPSG:4236 was the geographic coordinates, but I
> could be wrong.
>
> Any thoughts?

Hi. Do you have proj4js loaded? And is the EPSG:3395 projection
defined in proj4js?

Cheers,

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-- 
Eric Lemoine

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