Bump...
Richard On 14-11-16 16:55, Richard Duivenvoorde wrote:
Hi Dev's, having a small dataset of 300 features (from an online service). I want to quickly remove most/all of those features, request a new set an put them in the same vectorlayer (in a python plugin). All ok, untill you activate the 'show feature count' in the legend. If you show the featurecount, it looks like the features are deleted one by one: you can see the featurecount go down to zero... ( but I also have dataset with a lot more features :-( ) and it takes several (ten's) seconds. Easy testable: - load some data, tick the 'show feature count' tickbox in the legend. - make the layer editable and select all features - make sure the layer is current in the legend do the following in the python console: l=iface.mapCanvas().currentLayer() l.deleteSelectedFeatures() you can see the 'feature count' go down one by one (slowly...) while... if you do it outside of python, using the little red delete-basket in the edit-toolbar. All features are deleted in a blink! Also if you show the featurecount... I tried some different ways, but could not find a quick way? Do I miss something/a quicker way? I thought that it maybe had something to do with filling up the 'editbuffer', so tried with and without the 'edit' construct [0] But in this case I just do not want an edit-buffer anyway.. Regards, Richard Duivenvoorde [0] http://www.opengis.ch/2015/08/12/with-edit-layer/#avoid-using-dataprovider-methods _______________________________________________ Qgis-developer mailing list [email protected] List info: http://lists.osgeo.org/mailman/listinfo/qgis-developer Unsubscribe: http://lists.osgeo.org/mailman/listinfo/qgis-developer
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