Should I build a spatial index for my data (R*Tree for spatialite)? Any idea please? -- View this message in context: http://osgeo-org.1803224.n2.nabble.com/Slow-rendering-of-shapefile-in-python-qgis-application-tp6591319p6645396.html Sent from the qgis-developer mailing list archive at Nabble.com.