I am experiencing a small screen space offset when using a WMS layer (origin is GeoServer 2.1.4). Looking at the requests from QGIS (1.7.4) to my GeoServer I realised that the aspect ratio between the
WIDTH/HEIGHT and the
BBOX is different. Calculating the aspect difference back into screen space gives a difference of ~1 pixel - I wonder if it could be the reason for my offset?
Due to devices with non-square pixels it makes sense that the aspect ratio can differ.
But what is the reason for QGIS not enforcing equality between the aspect ratios?