I am having an issue using the WMS GetFeatureInfo control in
OpenLayers. I am using OpenLayers for a custom WMS client. Generally
speaking the GetFeatureInfo functionality works very well. However,
when I select a new WMS layer there is a chance that the absolute
position of the map may move (so that a full title can be displayed
above the map). If this happens, subsequent calls to GetFeatureInfo
give the wrong co-ordinates - shifted by the same amount as the map has
moved. It appears as though the GetFeatureInfo control is calculating
the I and J pixel co-ordinates according to the original (absolute)
position of the map and is not changing this if the position of the map
changes.
If anyone could help with how to avoid/work around/fix this problem, I'd
be most grateful.
Regards,
Guy Griffiths
Reading eScience Centre
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