[OpenLayers-Users] Highlight Features from WMS Layer

[Gery .]

I don't work with Geoserver, but where do you call your features? and definitely you need GetFeature for this. About the "0" problem, is it perhaps you have hover and box as false? 

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Piensa en el medio ambiente - mantenlo en la pantalla. NO lo imprimas si NO es necesario.
Think green - keep it on the screen. Do NOT print if it is NOT necessary.
Denken Sie an die Umwelt - bewahren Sie es auf dem Bildschirm. Drucken Sie es NICHT, wenn es NICHT notwendig ist.


From: jawendell at digitalmapping.com
To: rajjad at gmail.com
CC: gamejihou at hotmail.com; openlayers-users at lists.osgeo.org
Subject: RE: [OpenLayers-Users] Highlight Features from WMS Layer
Date: Mon, 4 Mar 2013 14:23:14 -0500

Imran, Thanks for the input.  I have added a GetFeature control and a highlight layer based on http://openlayers.org/dev/examples/getfeature-wfs.html as follows: var highlightLayer = new OpenLayers.Layer.Vector("Highlighted Features", {                                                styleMap: myStyles,                                                displayInLayerSwitcher: false,                                                isBaseLayer: false                                                }                                ); var highlightControl = new OpenLayers.Control.GetFeature({                                protocol: OpenLayers.Protocol.WFS.fromWMSLayer(mylayer),                                box: false,                                hover: false,                                maxFeatures: 20                });                 highlightControl.events.register("featureselected", this, function(e) {                                highlightLayer.addFeatures([e.feature]);                });                 highlightControl.events.register("featureunselected", this, function(e) {                                highlightLayer.removeFeatures([e.feature]);                }); map.addControl(highlightControl);highlightControl.activate(); The selected features are not being added to the highlightLayer layer.  According to Firebug, the numberOfFeatures="0".  Do you have any idea why there are no features being returned?  I use geoserver and WFS is enabled. Thanks, Jerome  From: Imran Rajjad [mailto:rajjad at gmail.com] 
Sent: Monday, March 04, 2013 2:08 PM
To: jawendell at digitalmapping.com
Cc: Gery .; OpenLayers User List
Subject: Re: [OpenLayers-Users] Highlight Features from WMS Layer hi, to make highlighting work, you will need to put your features in a vector layer anyway..regards,Imran On Mon, Mar 4, 2013 at 11:32 PM, Jerome A. Wendell <jawendell at digitalmapping.com> wrote:Gery, Thanks for your reply.  I have been searching a number of sites for the answer, but did not really find a definite answer.  So, now I know I need to add another control. I appreciate your help. Jerome  From: Gery . [mailto:gamejihou at hotmail.com] 
Sent: Monday, March 04, 2013 12:41 PM
To: jawendell at digitalmapping.com
Cc: OpenLayers User List
Subject: Re: [OpenLayers-Users] Highlight Features from WMS Layer I think so, there are several posts about that in gisexchange.com

Sent from my iBath
On Mar 4, 2013, at 18:18, "Jerome A. Wendell" <jawendell at digitalmapping.com> wrote:I have a control using WMSGetFeatureInfo that displays attributes of the selected features from a WMS layer in a popup.  I have tried unsuccessfully to also highlight the features selected in that same control by adding them to a highlight layer.  Do I need a separate control using GetFeature in order to highlight the selected features? Any help would be greatly appreciated. Thanks. _______________________________________________
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