How to get Map corner latlong using open layer.??

Question

How to get Map corner latlong using open layer.??? i had tried with map.getBounds() method but it shows error like "map.getBounds is not a function"

so kindly reply for this error or any example.

here i had use OpenLayers.js

Answer 1

0

getBounds() only works for OpenLayers 2. Since it is failing for you I assume that you are using OpenLayers 3.

For OpenLayers 3 you have to look at the map extent by calling map.getView().calculateExtent() according to these similar questions:

permanent link

answered 07 Jul '16, 09:24

scai ♦
33.3k●21●309●459
accept rate: 23%

map.getView().calculateExtent() does not work in OpenLayer3.

i use below link in open layer.

http://www.openlayers.org/api/OpenLayers.js

(11 Jul '16, 08:15) Jatin Patel

1

This is OpenLayers 2.

(11 Jul '16, 08:24) scai ♦

1

Your GetData() function has no local map object. You need to pass your map object as parameter or make it global. Currently it is only known inside init().

(12 Jul '16, 10:56) scai ♦

Answer 2

Above Both function not working.

below is the my code, please correct it.

=====================================

<html> <head> <title>OpenLayers Demo</title> <style type="text/css"> html, body, #basicMap { width: 100%; height: 100%; margin: 0; } </style>

<script src="http://www.openlayers.org/api/OpenLayers.js" type="text/javascript"></script>

<script type="text/javascript">
    function init() {
        var marker_layer = new OpenLayers.Layer.Markers("Markers");

        map = new OpenLayers.Map("basicMap");
        var mapnik = new OpenLayers.Layer.OSM();
        var fromProjection = new OpenLayers.Projection("EPSG:4326");   // Transform from WGS 1984
        var toProjection = new OpenLayers.Projection("EPSG:900913"); // to Spherical Mercator Projection

        var position1 = new OpenLayers.LonLat(78.9629, 20.5937).transform(fromProjection, toProjection);
        var position2 = new OpenLayers.LonLat(79.2629, 20.9937).transform(fromProjection, toProjection);
        var zoom = 8;

        map.addLayer(mapnik);
        map.setCenter(position1, zoom);

    }
</script>

<script type="text/javascript">
    function GetData() {
        debugger;

        //var bounds = map.getBounds();       //Error : map.getBounds is not a function

        //var vv1 = map.getView().calculateExtent();  //Error : map.getView is not a function
    }
</script>

</head> <body onload="init();"> <input id="Button1" type="button" value="Click Here" onclick="GetData();"/>

</body> </html>

=====================================

Answer 3

At this i have not use function but still i got an error.

==============================================

<html> <head> <title>OpenLayers Demo</title> <style type="text/css"> html, body, #basicMap { width: 100%; height: 100%; margin: 0; } </style>

<script src="http://www.openlayers.org/api/OpenLayers.js" type="text/javascript"></script>

<script type="text/javascript">
    function init() {
        var marker_layer = new OpenLayers.Layer.Markers("Markers");

        var map = new OpenLayers.Map("basicMap");
        var mapnik = new OpenLayers.Layer.OSM();
        var fromProjection = new OpenLayers.Projection("EPSG:4326");   // Transform from WGS 1984
        var toProjection = new OpenLayers.Projection("EPSG:900913"); // to Spherical Mercator Projection

        var position1 = new OpenLayers.LonLat(78.9629, 20.5937).transform(fromProjection, toProjection);
        var position2 = new OpenLayers.LonLat(79.2629, 20.9937).transform(fromProjection, toProjection);
        var zoom = 8;

        map.addLayer(mapnik);
        map.setCenter(position1, zoom);


        debugger;

        var bounds = map.getBounds();       //Error : map.getBounds is not a function

        var vv1 = map.getView().calculateExtent();  //Error : map.getView is not a function

    }
</script>

</head> <body onload="init();">

</body> </html>

==============================================

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