[OpenLayers-Users] restricted extent option

[Gerstner, Volker]

Hi all,

 

we try to use the 'restricted extent' option, see code below.

But ist doesn't work (i.e.: there is no javascript error, but there is nothing shown in the area of the map).

What did we wrong?

We also try it with 'map.zoomToMaxExtent(();', but nothing changes.

 

Thanks for quick response, best regards

 

V. Gerstner

 

 

Code with the 'restricted extent' option:

...

    var myMaxExtent = new OpenLayers.Bounds(5.7529273,47.008106,15.400018,54.651104);

    var myRestrictedExtent = new OpenLayers.Bounds(5.7529273,47.008106,15.400018,54.651104);

...         

 

    function init()

    {

        ... 

 

        OpenLayers.Util.onImageLoadError = function() {};

        map = new OpenLayers.Map("themaMap", {

            units: "m",

            numZoomLevels: 5,

            maxResolution: 156543.0339,

            maxExtent: myMaxExtent

            restrictedExtent: myRestrictedExtent

        });

        var baseOptions = {

            minZoomLevel: 6,

            maxZoomLevel: 11,

            numZoomLevels: 11,

            transitionEffect: 'resize',

            tileOptions: {crossOriginKeyword: null}

        };

       var baseLayerWWW = new OpenLayers.Layer.OSM("Hintergrundkarte WWW", "<url to the map-images>", baseOptions);

        var themaLayer = new OpenLayers.Layer.Vector("WinterInfekt", {

            projection: map.displayProjection,

            strategies: [new OpenLayers.Strategy.Fixed()],

            protocol: new OpenLayers.Protocol.HTTP({

                url: "<url to kml-File with the definition of the markers>",

                format: new OpenLayers.Format.KML({

                    extractStyles: true,

                    extractAttributes: true

                })

            })

        });

 

        var borderlayer = new OpenLayers.Layer.Vector("Grenzen", {

            displayInLayerSwitcher: false,

            strategies: [new OpenLayers.Strategy.Fixed()],

            protocol: new OpenLayers.Protocol.HTTP({

                url: "<url to kml for additional infos like borders etc.>",

                format: new OpenLayers.Format.KML({

                    extractStyles: true,

                    extractAttributes: true

                })

            }),

            rendererOptions: { zIndexing: true }

        });

        map.addLayers([baseLayerWWW, borderlayer, themaLayer ]);

        map.setCenter(new OpenLayers.LonLat(10.0, 51.2).transform(

            new OpenLayers.Projection("EPSG:4326"), // transform from WGS 1984

            new OpenLayers.Projection("EPSG:900913") // to Spherical Mercator Projection

            ), 6

        );

        map.events.register('zoomend', this, function (event) {

            var x = map.getZoom();

 

            if( x < 6)

            {

                map.zoomTo(6);

            }

        });

 

        select = new OpenLayers.Control.SelectFeature(themaLayer);

        themaLayer.events.on({

            "featureselected": onFeatureSelect,

            "featureunselected": onFeatureUnselect

        });

        map.addControl(select);

        select.activate();

    }

 

 

 

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