[OpenLayers-Users] Control.GetFeature

[Ivan Grcic]

Hi,

On Mon, Nov 30, 2009 at 10:14 AM, Andreas Hocevar <ahocevar at opengeo.org> wrote:
> Hi,
>
> why are you forcing your format to JSON? And are you sure that your
> geometryName is "GEOM", not "the_geom"? Try to omit the readFormat and
> formatOptions properties.
>
Well using JSON is much more lightweight then using GML, that is,
transfered size in data is several times smaller.

Where was a little error, it shoud say:

            readFormat: new OpenLayers.Format.GeoJSON(),
            outputFormat: "JSON",

That should work,

cheers


> Regards,
> Andreas.
>
> stash wrote:
>>
>> Ivan Grcic-2 wrote:
>>
>>> OpenLayers.Protocol.WFS.fromWMSLayer is just convinient method for
>>> creating OpenLayers.Protocol.WFS from allready defined WMS layer. So
>>> you can just define protocol as:
>>>
>>> protocol: OpenLayers.Protocol.WFS({
>>>             readFormat: new OpenLayers.Format.GeoJSON(),
>>>             formatOptions: {
>>>                 outputFormat: "JSON"
>>>             },
>>>             url: "http://localhost:8080/geoserver/wfs"
>>>             featureType: "ftName",
>>>             featurePrefix: 'prefix',
>>>             featureNS: "http://ns",
>>>             geometryName: 'geometry',
>>>             maxFeatures: 100
>>> })
>>>
>>>
>>>
>>
>> Hello,
>> thanks for your post. I tried this but it doesn't work. Here is my code.
>>
>>
>> var control = new OpenLayers.Control.GetFeature({
>> protocol: OpenLayers.Protocol.WFS({
>>             readFormat: new OpenLayers.Format.GeoJSON(),
>>             formatOptions: {
>>                 outputFormat: "JSON"
>>             },
>>             url: "http://localhost:8080/geoserver/wfs",
>>             featureType: "MY_LAYER",
>>             featurePrefix: 'topp',
>>             featureNS: "http://www.openplans.org/topp",
>>             geometryName: 'GEOM',
>>             maxFeatures: 100,
>>            defaultFilter: my_filter
>>    })
>>    });
>>
>> control.events.register("featureselected", this, function(e) {
>>     select.addFeatures([e.feature]);
>> });
>>
>> map.addControl(control);
>> control.activate();
>>
>> When I launch my app I get an error that feature.lenght is null or doesn't
>> exist?
>>
>> Do I have to implement a map.events.register as I did it with my
>> getfeatureinfo or is there something else wrong.
>>
>> Thanks for your help
>>
>> Regards
>> stash
>>
>
>
> --
> Andreas Hocevar
> OpenGeo - http://opengeo.org/
> Expert service straight from the developers.
>
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>



-- 
Ivan Grcic