[GIS] OpenLayers 3 get current center

openlayers

Is it possible to get the current position (lat/lng/zoom) in OpenLayers 3 (Like map.getCenter() in Leaflet)? I couldn't find anything in the docs.

Best Answer

Just type:

map.getView().getCenter()

You should look at official examples source code: they will really help you.

Related Solutions

[GIS] Getting OpenLayers to scale past nativeZoom like Leaflet

You just need to have more resolutions/zoom levels in your view than in your XYZ source.

By default the maxZoom for ol.source.XYZ is 42. You will want to set it to 16 in your case. You also want to remove maxResolution and minResolution from your layer, otherwise the layer won't be displayed when the view resolution is outside the [minResolution, maxResolution] range.

And you will need to set maxZoom to 18 in your view. So when the view will change to zoom level 17 and 18 tiles at zoom level 16 will be used.

[GIS] Geometry filtering in Openlayers 3

You'll have to build the CQL filter manually, but ol.format.WKT can help you to get the polygon coordinates in the correct WKT format. So in the end you'll be writing something like

var format = new ol.format.WKT();
var filter = 'DWITHIN (SHAPE, ' +
    format.writeGeometry(feature.getGeometry()) +
    ', 10, kilometers)';

Best Answer

Related Solutions

[GIS] Getting OpenLayers to scale past nativeZoom like Leaflet

[GIS] Geometry filtering in Openlayers 3

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