[OpenLayers-Users] problem with OpenLayers spatial.INTERSECTS filter

[Bart van den Eijnden]

Your value of the spatial filter should not be a WKT, but just the polygon geometry itself.

Best regards,
Bart

-- 
Bart van den Eijnden
OpenGeo - http://opengeo.org
Expert service straight from the developers.



On Sep 12, 2013, at 5:52 AM, Sally Buechel <swbuechel at comcast.net> wrote:

> Trying to use a hand-drawn polygon delimiter for spatial WFS query via OpenLayers to mapserver (then postgis).
> I can get the WKT of the drawn polygon and can substitute the dynamic values, but am having trouble getting
> the spatial query properly formatted I guess.
>  
> Filter defined in OpenLayers:
>  
> myfilter = new OpenLayers.Filter.Logical({
>             type: OpenLayers.Filter.Logical.AND,
>             filters: [ new OpenLayers.Filter.Spatial({
>                type: OpenLayers.Filter.Spatial.INTERSECTS,
>                value: curr_wkt
>                }),
>                new OpenLayers.Filter.Comparison({
>                   type: OpenLayers.Filter.Comparison.EQUAL_TO,
>                   property:  "roll",
>                   value: roll
>                 })
>               ]
>          });
>  
> What "myfilter" looks like after created:
> (INTERSECTS(footprint, '(POLYGON((-161.6625 71.073751831055,-167.625 69.498751831055,-168.3 65.673751831055,
> -166.275 61.848751831055,-157.6125 64.773751831055,-161.6625 71.073751831055)))')) AND (roll = '4')
>  
> But in the POST output from Firebug when run, the filter gets converted to an undefined
> Box (or in this case, Envelope if using 1.1.0  I tried both 1.0.0 and 1.1.0):
>  
> POST result -
>  
> <wfs:Query typeName="feature:mytable" srsName="EPSG:4326">
> <ogc:Filter xmlns:ogc="http://www.opengis.net/ogc">
> <ogc:And>
> <ogc:Intersects>
> <ogc:PropertyName>footprint</ogc:PropertyName>
> <gml:Envelope xmlns:gml="http://www.opengis.net/gml" srsName="EPSG:4326">
> <gml:lowerCorner>undefined undefined</gml:lowerCorner>
> <gml:upperCorner>undefined undefined</gml:upperCorner>
> </gml:Envelope>
> </ogc:Intersects>
> <ogc:PropertyIsEqualTo matchCase="true">
> <ogc:PropertyName>roll</ogc:PropertyName>
> <ogc:Literal>4</ogc:Literal>
> </ogc:PropertyIsEqualTo>
> </ogc:And>
> </ogc:Filter>
> </wfs:Query>
>  
> Is the WKT the wrong input format to use? Why does it convert my polygon to Box (Envelope), and poorly at that?
>  
> Thank-you for any help!  I’m stumped.
>  
>  
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