[OpenLayers-Users] Zoom to filtered feature

[Ravi Pavuluri]

Michal,

I am not sure if this answers your question completely. You can try using WFS 
which can get the boundary of your feature of interest and then you can code for 
zooming to those bounds.

-Ravi. 




________________________________
From: michsred <michsred at gmail.com>
To: users at openlayers.org
Sent: Fri, March 11, 2011 3:58:47 AM
Subject: [OpenLayers-Users] Zoom to filtered feature

Hi list,

is there possible to perform automatical zoom to feature filtered by CQL
filter?

I have a WMS layer containig parcels and I want to enable some kind of
searching mechanism where user will put parcel number to a form and after
apply it the only searched parcel will be displayed and map view will be set
to this parcel's bounds.

I enabled CQL filtering like this:

                function updateFilter(){
                if(pureCoverage)
                  return;
            
                var filter = "parcel_number = " +
document.getElementById('filter').value;
                            
                var filterParams = {
                    cql_filter: filter
                };
              
                mergeNewParams(filterParams);
            }
            
            function mergeNewParams(params){
                myLayer.mergeNewParams(params);
            }

and after I put parcel number to a form connected with updateFilter()
function and apply it, the only searched parcel is dispayed. My question is
what should I do to enable zooming to the filtered parcel? Is it possible to
retrieve BBOX of a particular feature from WMS layer and then use it in JS?

Thank you in advance for any suggestions!

Michal

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