Hi Jim,
I am not quite sure if I undestood you right, but maybe you use two
vector layers with a WFS protocol and a filter, for example like this:
new OpenLayers.Layer.Vector("WFS", {
strategies: [new OpenLayers.Strategy.BBOX()],
protocol: new OpenLayers.Protocol.WFS({
url: "http://demo.opengeo.org/geoserver/wfs";,
featureType: "tasmania_roads",
featureNS: "http://www.openplans.org/topp";
}),
styleMap: new OpenLayers.StyleMap({
strokeWidth: 3,
strokeColor: "#333333"
}),
filter:
new OpenLayers.Filter.Comparison({
type: OpenLayers.Filter.Comparison.EQUAL_TO,
property: "TYPE",
value: "deed"
})
})
(adapted from http://openlayers.org/dev/examples/wfs-filter.html)
Best regards,
Chris
Am 06.12.2011 06:51, schrieb Jim White:
> Hi,
>
> I would like to select features from a wfs layer in the treepanel based
> on the vaue of an attribute. For example a wfs layer with an attribute
> 'type' and values of deed or grant and the layer tree that would have
> checkboxes to show either deeds or grants.
>
> What objects do I use to do this?
>
> Thanks,
> Jim White
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