I am using GeoServer 2.5.1 (stable version web archive download) and Tomcat
7.0.54 on a Windows 2008 R2 server.
I have several WMS layers in GeoServer that only contain polygons and are
based on a shapefile data source. I am submitting WMS (Version 1.1.1)
GetFeatureInfo requests from an OpenLayers map when a polygon is clicked on.
When I select certain polygons on the WMS layer, a polygon adjacent to it
and in some cases a polygon that isn't even touching the clicked on polygon
will be returned in the GetFeatureInfo response from GeoServer. Previously
I was using GeoServer 2.4.3 and was not experiencing this behavior. In
researching this issue, it seems to be related to the maxBuffer value in the
wms.xml file. First I tried changing the buffer and maxBuffer parameters
using vendorParams in the GetFeatureInfo request, but it did not change the
response. I also tried reducing the maxBuffer value in wms.xml to 5 (which
I think is the default value for the buffer parameter) and restarting
Tomcat, but it did not change the behavior either. Is there another
parameter that controls the results of a GetFeatureInfo request so that only
the requested feature is returned, or am I misinterpreting how the maxBuffer
value affects the results? For now, I have reverted back to the old
GetFeatureInfo engine by adding the following to my JVM startup parameters:
-Dorg.geoserver.wms.featureinfo.render.enabled=false
By adding the above parameter, the GetFeatureInfo response is now being
returned as before.
Thanks,
Jerome Wendell
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