[OpenLayers-Users] Any examples using Proj4js and OpenLayers.Projection class?

[Christopher Schmidt]

On Thu, Dec 20, 2007 at 02:47:42AM -0600, Steve Lime wrote:
> I'm working with openlayers trunk trying to get some point projection to work. Code like this:
> 
> <!-- pt src="scripts/openlayers/lib/OpenLayers.js"></scr -->
> <!-- pt src="scripts/proj4js/lib/proj4js.js"></scr -->
> <!-- pt src="scripts/proj4js/lib/projCode/stere.js"></scr -->
> 
> map = new OpenLayers.Map( $('map'), {maxExtent: new OpenLayers.Bounds(-2668252.000000,-2707008.500000,2813685.000000,2774928.500000),
>                                                  maxResolution: 10706.9082, units: 'm', projection: 'EPSG:3031'} );
> 
> Proj4js.defs['EPSG:3031'] = '+proj=stere +lat_0=-90 +lat_ts=-71 +lon_0=0 +k=1 +x_0=0 +y_0=0 +ellps=WGS84 +datum=WGS84 +units=m +no_defs'; // Antarctica Polar Stereographic
> var wgs84 = new	OpenLayers.Projection('WGS84');
> 
> var point = new OpenLayers.Geometry.Point(lon, lat);
> OpenLayers.Projection.transform(point, wgs84, map.getProjection());
> alert(point.x +" "+ point.y);
> 
> doesn't seem to work, the x, y members remain unchanged. Any ideas? 

map.getProjection() returns a string. map.getProjectionObject() is what
you should be using. Passing a string instead of an object will cause
the transform to not be performed. 

So, if you change map.getProjection() to map.getProjectionObject(),
you'll probably get farther.

REgards,
-- 
Christopher Schmidt
MetaCarta