[fdo-users] Spatial Filter Help Needed

Gavin Cramer gavin.cramer at autodesk.com
Thu Oct 2 12:50:04 EDT 2008

FDO property names are case-sensitive.  For SHP, they are usually taken from field names, which are often uppercase by conventoin.  Perhaps it is supposed to be SHAPE?


-----Original Message-----
From: fdo-users-bounces at lists.osgeo.org [mailto:fdo-users-bounces at lists.osgeo.org] On Behalf Of surrounded
Sent: Thursday, October 02, 2008 12:38 PM
To: fdo-users at lists.osgeo.org
Subject: [fdo-users] Spatial Filter Help Needed

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


throws the follwing exception:
"The property 'Shape' is not in the readers selected property set"



OSGeo.FDO.Expression.GeometryValue pGVal = new GeometryValue(pByteCircle);
OSGeo.FDO.Expression.ComputedIdentifier pPropName = new
ComputedIdentifier("Shape", new Identifier("Geometry"));

IdentifierCollection pIDColl = sel.PropertyNames;

OSGeo.FDO.Filter.Filter pPtLineFilter = new
OSGeo.FDO.Filter.SpatialOperations.SpatialOperations_Intersect, pGVal); }

OSGeo.FDO.Commands.Feature.IFeatureReader reader = sel.Execute();
while (reader.ReadNext())
     ......some code....

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