[GIS] display openlayers lat/long map bound on page

openlayers-2

I want to display the bounds of my current extent on the page. I am not too great with javascript. I know it must be related to this:
map.getLonLatFromPixel(new OpenLayers.Pixel(bounds.left, bounds.bottom))

Can't seem to get it. Any help would be great! Thanks.

Best Answer

I think you are looking for map.getExtent(): http://dev.openlayers.org/releases/OpenLayers-2.11/doc/apidocs/files/OpenLayers/Map-js.html#OpenLayers.Map.getExtent

This will give you a bounds object in the coordinate-system of your map. The Bounds object (http://dev.openlayers.org/releases/OpenLayers-2.11/doc/apidocs/files/OpenLayers/BaseTypes/Bounds-js.html) has several methods for getting the bound-coordinates, the simplest beeing toString.

Hope this helps!

Related Solutions

[GIS] Modify existing library from OpenLayers (ZoomToMaxExtent)

You don't need to change the OpenLayers code. Instead, add the bounds to your map's options:

var options = {
  maxExtent: new OpenLayers.Bounds(-16.08,49.06,6.76,58.74),
  maxResolution: 0.00138671875,
  projection: "EPSG:4326",
  units: "degrees"
};
map = new OpenLayers.Map("map", options);

[GIS] Openlayers 2: Check the map content and tell if the feature exists in the map bound

Here's a way to determine whether a feature is visible in the current extent:

features = your-layer.features; 
for (var i = 0; i < features.length; i++) { 
    if (features[i].geometry.getBounds().intersectsBounds(map.getExtent())) { 
        console.log(features[i]); 
    } 
}

Best Answer

Related Solutions

[GIS] Modify existing library from OpenLayers (ZoomToMaxExtent)

[GIS] Openlayers 2: Check the map content and tell if the feature exists in the map bound

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