[OpenLayers-Users] strange raster map behaviour

[Christopher Schmidt]

On Thu, Mar 25, 2010 at 06:24:06PM +0100, Stefanie Weykam wrote:
> Hi list members,
> 
> We are observing very strange raster map behaviour – our raster maps are 
> rendered with a slight shift towards south and east. The shift magnitude 
> also seems to be scale dependant (a bit more in x and less in y).
> 
> The maps are correctly displayed in another client (gvSIG) so the WMS 
> should be alright.
> 
> Also note that a GetFeatureInfo request returns the correct value (right 
> value in the right place).
> Could it be a rendering artefact ?? Is there any workaround?

http://docs.openlayers.org/help/minimize.html

> Additional info:
> -Vector layers are not effected
> -No reprojection envolved (no google maps or any other ref-systems than 
> unprojected geographic coordinates)
> -GetFeatureInfo - Maxfeatures set to 1
> -All testing done at scales where map pixels size was much bigger than 
> screen pixel size
> -WMS generated by MapServer 5.2.1 based on TIFs created in ArcGIS
> -OpenLayers 2.8 -- $Revision: 9492 $
> 
> Any comments are highly appreciated,
> Kind regards,
> Stefanie
> 
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-- 
Christopher Schmidt
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