[OpenLayers-Users] Highlight elements

[Bart van den Eijnden (OSGIS)]

I do this using SLD_BODY in OpenLayers. Works fine, as long as your XML 
string is not encoded.

Best regards,
Bart

Christopher Schmidt schreef:
> On Thu, Jan 25, 2007 at 06:11:28PM +0100, Aitor Calero Garcia wrote:
>   
>>> Christopher,
>>>
>>> I believe this is like the mapserver Query functionality. if you do a
>>> query the query results highlighted on the map. In the description
>>> below, the id could be a UID for a shapefile or a database record or
>>> whatever and they want to be able to highlight that object(s) on the
>>> map. 
>>>       
>> Exactly!!! I think that it is possible to add an SLD parameter to WMS
>> request with a new style to be applied in an specific layer. I wonder if
>> this could be done in OpenLayers, or if it is any other way to achieve
>> this.
>>     
>
> If you can provide an example WMS Image URL before and after, I can
> provide more specific information, but something like:
>
> layer.mergeNewParams({'queryfeature':'id', 'id':17})
>
> Should cause the layer to redraw itself with the tiles having
> &queryfeature=id&id=17 tacked on. See 
>
> http://openlayers.org/dev/examples/wmst.html
>
> For example usage.
>
> If it's more complex than that, things might get more hairy, but it
> seems like it's probably possible to do what you want.
>
>   
>> It is a very common feature. Look for some parcels, for example,
>> retrieve a list, and get all those parcels highlighted in the map.
>>     
>
> "common" for you :) I'm a Javascript programmer, not a map user!
>
> Regards,
>   


-- 
Bart van den Eijnden
OSGIS, Open Source GIS
bartvde at osgis.nl
http://www.osgis.nl