Hi Marc, okay, I see your point now.
Feel free to open up a ticket for making the layer order in QUERY_LAYERS the same as for LAYERS for the WMSGetFeatureInfo control. TIA. Best regards, Bart -- Looking for flexible support on OpenLayers or GeoExt? Please check out http://www.osgis.nl/support.html Bart van den Eijnden OSGIS bart...@osgis.nl On Apr 8, 2011, at 12:46 PM, Marc Jansen wrote: > Hi Bart, > > I am currently looking at application code that registers an eventlistener to > getfetureinfo on the WMSGetFeatureInfoControl. > > In that handler all results except for the first a thrown away. UMN Mapserver > in that particular case returns the results for the particular location in > the order they were requested. > > The current logic in WMSGetFeatureInfo orders the layers for GetMap in a > different Way than for GetFeatureInfo. For UMN this results in a setup where > one only sees a feature from layer B (it is drawn atop a feature at the same > location from layer A) and the first result of the GFI is the feature from > layer A. > > I am totally unsure what (if any) sorting is being applied to results of > getFeatureInfo-results by the various WMS-implementations or what the > standard says. > > At least for UMN the order seems to be relevant. > > I know that the application code could be refactored to examine the results > and find the correct one, but I also see UMN mapserver behaving as one might > (!) expect it to do: > > Draw layer B atop of A => REQUEST=GetMap&LAYERS=A,B > Query Layer for Feature Info => REQUEST=GetFeatureInfo&QUERY_LAYERS=B,A > > I am just unsure what the correct behaviour is, and if we should ignore the > fact that UMN does respect the order of QUERY_LAYERS. > > I hope my point is somehow clear and not to insignificant (Maybe I should not > be working on this after a week of conference-stress ;-)). > > Regards, > Marc > > > > On 08.04.2011 10:30, Bart van den Eijnden wrote: >> Hi Marc, >> >> I did not see how the confusing behaviour could be reached, since >> FEATURE_COUNT is on a *per layer* basis AFAIK. >> >> So if there are features in both layers on the clicked point and >> FEATURE_COUNT is 1, you will always get back 2 features. >> >> Or am I missing something here? >> >> Best regards, >> Bart >> > > _______________________________________________ > Dev mailing list > d...@lists.osgeo.org > http://lists.osgeo.org/mailman/listinfo/openlayers-dev > _______________________________________________ Dev mailing list d...@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/openlayers-dev