I am just wondering if one could use the following in a spatial index created from the layer provider
QgsVectorLayer* cvertexLayer = cVertexLayer(txtStream); QgsVectorDataProvider* cvectorProvider = cvertexLayer->dataProvider(); bool blnSpatialIdx = cvectorProvider->createSpatialIndex(); After creating the spatial index file how can I access it in code? can I use it in anyway to perform spatial filters for selection purposes? QgsSpatialIndex mSpatialIndex = <dynamic_Cast> cvectorProvider; // may be cvectorLayer; or may be even directly perform this QgsSpatialIndex mSpatialIndex = cvectorProvider->createSpatialIndex(); // and then do something like this mSpatialIndex.intersects( rect ); DO I have to create my own in memory spatial index to perform the above what do you think? Maaza _______________________________________________ Qgis-developer mailing list Qgis-developer@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-developer
