[fdo-users] Spatial Filter Help Needed

[Jackie Ng]

I see two things:

1) The filter is being created but not being applied to the select command.
2) I don't think you can apply filters on "aliased" properties. You should
be able to filter on the "Geometry" property and get the same result.

- Jackie


surrounded wrote:
> 
> I'm trying to intersect a circle (created from input coordinates) with a
> shapefile.  I've created the circle geometry and am now trying to set up
> the filter.  In the code below, the statement
> 
> while(reader.ReadNext()) 
> 
> throws the follwing exception:
> "The property 'Shape' is not in the readers selected property set"
> 
> SUGGESTIONS....THANKS
> 
> **********************************************
> 
> OSGeo.FDO.Expression.GeometryValue pGVal = new GeometryValue(pByteCircle);
> OSGeo.FDO.Expression.ComputedIdentifier pPropName = new
> ComputedIdentifier("Shape", new Identifier("Geometry"));
> 
> IdentifierCollection pIDColl = sel.PropertyNames;
> pIDColl.Add(pPropName);
> 
> OSGeo.FDO.Filter.Filter pPtLineFilter = new
> OSGeo.FDO.Filter.SpatialCondition(pPropName,
> OSGeo.FDO.Filter.SpatialOperations.SpatialOperations_Intersect, pGVal); }
> 
> OSGeo.FDO.Commands.Feature.IFeatureReader reader = sel.Execute();
> while (reader.ReadNext())
> {
>      ......some code....
> } 
> 
> 

-- 
View this message in context: http://n2.nabble.com/Spatial-Filter-Help-Needed-tp1134329p1134362.html
Sent from the FDO Users mailing list archive at Nabble.com.