I am trying to find a substitute for the Relates(T********) function in
Geoserver. Technically, filtering features which intersect and do not
touch the geometry should give the same results but I'm getting invalid
responses with Geoserver 1.3.2.
The filter I am sending to Geoserver is listed at the end of this email
for any interested in trying this out themselves. It is essentially a
INTERSECTS AND NOT TOUCHES filter (with an additional property filter to
limit results for debugging purposes). When I check the geometries of
the resultant features returned by Geoserver using JTS, 20 of the 23
evaluate to true for filterGeom.touches(featureGeom). The other three
evaluate to true for filterGeom.equals(featureGeom), which are the three
results I'm interested in.
Is the second condition ignored, or does Geoserver not support TOUCHES
properly? I'll file a bug if there's no known issue already, or if I'm
not doing something wrong with my filter.
***********************
Filter as sent to http://openmaps.gov.bc.ca/geoserver/wfs/GetFeature
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John Fletcher
Latitude Geographics Group Ltd.
jfletcher@anonymised.com www.latitudegeo.com
Head Office: 204 Market Square Victoria, BC Canada V8W 3C6
Tel: (250) 381-8130 Fax: (250) 381-8132
Geocortex Internet Mapping (www.geocortex.net) - Helping people succeed
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