[OpenLayers-Users] How to display a specific place ?

Ravi Krishna ravikrishna at qburst.com
Thu May 20 23:40:55 EDT 2010


Thanks cdobell,
It worked :)

On Fri, May 21, 2010 at 12:22 AM, cdobell [via OSGeo.org] <
ml-node+5081089-668295985-541374 at n2.nabble.com<ml-node%2B5081089-668295985-541374 at n2.nabble.com>
> wrote:

> First, make sure that you're adding your google layer to map.  In one of
> your examples, you only added the wms layer.
>
> Second, since google maps are EPSG:900913, you'll need to pass it meters
> instead of a lon,lat.  Set up a point or bounds you know (lon,lat) and then
> transform that point/bounds to the google projection.
>
> // I saw a reference to this lat,lon coordinate: 63.259591,-144.667969
>
> var GEOGRAPHIC_PROJECTION = new OpenLayers.Projection("EPSG:4326"); // stnd
> LAT,LON via WGS84 datum
> var MERCATOR_PROJECTION =   new OpenLayers.Projection("EPSG:900913"); //
> '900913' == 'GOOGLE' projection
> var IndiaCenterPointGeographic = new
> OpenLayers.LonLat(-144.667969,63.259591); // lon,lat
> var IndiaCenterPointMercator =
> IndiaCenterPointGeographic.transform(GEOGRAPHIC_PROJECTION,MERCATOR_PROJECTION);
>
> var startZoomLevel = 5;
> //....
> //set up map and layers...
> //....
> map.setCenter(IndiaCenterPointMercator,startZoomLevel);
>
>
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