[OpenLayers-Users] WMS GetFeatureInfo Issue

[Daniel Behr]

Hello Guy,
I recently had a similar problem when moving a marker. I got the click 
position with:

map.getLonLatFromViewPortPx(xy)

when trying to move the existing marker on the layer with 
getLonLatFromViewPortPx I saw the same offset as you describe.

Using map.getLayerPxFromViewPortPx(xy) instead solved the problem.
Hope that helps...

Daniel



Am 01.07.2013 13:31, schrieb Guy Griffiths:
> 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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