[OpenLayers-Users] Reproject co-ordinate points
Smaran Harihar
smaran.harihar at gmail.com
Sun Aug 26 18:43:47 PDT 2012
I am trying out this code,
var lonLat = evt.xy;
console.log(lonLat.lon, lonLat.lat);
var proj = new OpenLayers.Projection("EPSG:4326");
lonLat = new OpenLayers.LonLat(lonLat.lon,
lonLat.lat);
lonLat.project(proj, map.getProjectionObject());
And I keep getting this error,
undefined undefined (for the lonLat.lon, lonLat.lat)
Uncaught TypeError: Object lon=NaN,lat=NaN has no method 'project'
(for lonLat.project(proj, map.getProjectionObject());)
What should I correct?
On Sun, Aug 26, 2012 at 6:13 PM, Phil Scadden <p.scadden at gns.cri.nz> wrote:
> its very easy to do the transform in js, especially between 4326 and
> 900913. eg
> var lonLat = this.map.getLonLatFromPixel(e.xy);
> if (this.map.displayProjection) {
> lonLat.transform(this.map.getProjectionObject(),
> this.map.displayProjection );
> }
> If you look at docs for LonLat, you will see the transform method. It
> needs two projection objects. Create one for 4326
> eg var p4326 = new OpenLayers.Projection("EPSG:4326");
>
> and then the other will be the map projection. Code might something like:
> var p4326 = new OpenLayers.Projection("EPSG:4326");
> lonLat = new OpenLayers.LonLat(lon,lat);
> lonLat.project(p4326,map.getProjectionObject());
>
>
>
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--
Thanks & Regards
Smaran Harihar
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