Do you mean refresh the rendering or synchronizing the layer with the data source? I usually use QgsMapLayer::reload() for the latter, and QgsMapCanvas::refresh() for the first.
giovanni 2012/5/16 Carson Farmer <[email protected]> > Hi list, does anyone know of a clever way to (programmatically) reload > a layer without actually removing it and re-adding it to the layer > list. Some context: I have a layer that sometimes gets updated by an > external application, and I want to be able to 'refresh' the layer > from the Python console to reflect these changes (new features, > deleted features, new attributes, etc.). I *could* simply load the > layer again, but I'm hoping there is a more efficient way to do this > (also I want to keep the current styling, layer order, unique layer > id, etc). > > Any thoughts/ideas? Note: assume we are working with a spatialite layer > for now. > > Carson > > -- > Dr. Carson J. Q. Farmer > Centre for GeoInformatics (CGI) > School of Geography and Geosciences > Irvine Building, University of St Andrews > St Andrews, Fife, KY16 9AL > Scotland, UK > _______________________________________________ > Qgis-developer mailing list > [email protected] > http://lists.osgeo.org/mailman/listinfo/qgis-developer >
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