[Javascript]Get coordinate from openlayers map

Question

I would get the coordinate from an openlayers map. When I open my page I would that when I click on a button, I have received the coordinate of top bottom left and the upper right.

 <html>
<head>
  <title>OpenLayers Example</title>
    <script src="http://openlayers.org/api/OpenLayers.js"></script>
    </head>
    <body>
      <div style="width:100%; height:100%" id="map"></div>
      <script defer="defer" type="text/javascript">
        var map = new OpenLayers.Map('map');
        var wms = new OpenLayers.Layer.WMS( "OpenLayers WMS",
            "http://labs.metacarta.com/wms/vmap0", {layers: 'basic'} );
        map.addLayer(wms);
        map.zoomToMaxExtent();
      </script>
<input type="button" text="Get Coordinate from map">
</body>
</html>

Thanks a lot.

amercader · Accepted Answer · 2010-06-23 09:04:35Z

4

You should use the getExtent() function of the Map object.

Returns

{OpenLayers.Bounds} A Bounds object which represents the lon/lat bounds of the current viewPort.

It will return you an OpenLayers.Bounds object, which will have the top, left, bottom and right coordinates of the current view.

answered Jun 23, 2010 at 9:04

amercader

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1 Comment

Christopher Schmidt Over a year ago

You can use .toBBOX() to get a string version of the bounds, and you can generate your button to this using any standard Javascript approaches.

Community · Accepted Answer · 2020-06-20 09:12:55Z

0

I think you want to use map.getCenter() ? (this is in case you want the center coordinates of the map in lat lon, but it's not really clear what coordinate you want)

edited Jun 20, 2020 at 9:12

CommunityBot

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answered Jun 22, 2010 at 12:57

Redlab

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