PyQt4 is present in the QGIS versions of William to be used in the Python console, so, automatically you have a backend. -- View this message in context: http://osgeo-org.1560.n6.nabble.com/Using-visualizing-3D-data-Z-values-tp4126375p5009181.html Sent from the Quantum GIS - User mailing list archive at Nabble.com.