[OpenLayers-Users] search feature to attribute

[Eric Lemoine]

On Saturday, August 29, 2009, Maren Kiehl <maren.kiehl at gmx.de> wrote:
> Hi at all.
>
> I'm searching for a function which can identify a feature by searching
> an attribute-value.
> I have the name of a feature-attribute (http://feature.attributes.name) and
> wanna search the apposite feature. After that I wanna zoom to the center
> of this feature(map.setCenter(feature.geometry.getBounds().getCenterLonLat(), zoom);).
> The problem ist: I dont know how to identify the feature by knowing the attribute. I get the
> attribute-value from a php-value in another page. By clicking a link on
> this page a window opens and shows a little map with the feature-point
> in the center of it. Everything (little map opens in a popup and shows the extent of all points)
> works except for the last step.
> Does somebody know how to get the feature? Does a function for this problem exist?

Would something like the following work for you?

(NAME is the attribute name, and VALUE the attribute value)

function getFeatureByValue(layer) {
    var features = layer.features;
    for(var i=0; i<features.length; i++) {
        var feature = features[i];
        if(feature.attributes[NAME] == VALUE) {
            return feature;
        }
    }
}


>
> Thanks for your support.
> Best regards,
> Maren
>
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-- 
Eric Lemoine

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