Overlay Extent is not fit using ZoomToExent(exent) by Client Side

[riyas]

Hi,
I am trying to set Layer Extent to the Map by Client Side, but it’s not work out.
Code:
function zoomToRoute(overlayName) {
if (wfMap != undefined) {
var overlay = olMap.getLayer(overlayName);
if (overlay != null)
wfMap.ZoomToExtent(overlay.getExtent());
}
I think problem will be Overlay Extent, can you please check and give me code for setting Layer Extent to the Map.

Thanks,
Riyaz

[Ethan]

Hi Riyaz,

The result of the overlay.getExtent() is not equal the GetBoundingBox in server side.

If you pan the map and alert(overlay.getExtent()) you can see its value get changed always.

So if you want to zoom to target extent, please build it and call this API for example:

var extent = new OpenLayers.Bounds(30, -95, 78, -60);
Map1.ZoomToExtent(extent);

I think this topic maybe helpful.

How to find layers bounding box? and zoom map to that bounding box?

I have several layers from sql server tables. When I load them, I will apply some filters to load certain features, so not all features in the layer will be loaded into map. I would like to know how to finding the bounding box of these found features? Then when to zoom the map to that extent? Can I just tell the map the bounding box and then it will find the best scale? Thanks, Guangming

Regards,

Ethan