Hi Matthias, Thank you very much!
Regards, Jorge -----Mensagem original----- De: QGIS-Developer [mailto:qgis-developer-boun...@lists.osgeo.org] Em nome de Matthias Kuhn Enviada em: segunda-feira, 4 de junho de 2018 04:14 Para: qgis-developer@lists.osgeo.org Assunto: Re: [QGIS-Developer] QgsFeatureRequest SortByOrder Hi Jorge, There are two possibilities, one is to use the full-blown API with OrderBy class etc. And then there is a shorthand for this, called QgsFeatureRequest.addOrderBy which is enough in 90% of the cases. Short version: request = QgsFeatureRequest() request.addOrderBy('field_name') https://qgis.org/pyqgis/master/core/Feature/QgsFeatureRequest.html#qgis.core.QgsFeatureRequest.addOrderBy Long version: clause = QgsFeatureRequest.OrderByClause('field_name') orderBy = QgsFeatureRequest.OrderBy([clause]) request = QgsFeatureRequest() request.setOrderBy(orderBy) https://qgis.org/pyqgis/master/core/Feature/QgsFeatureRequest.html#qgis.core.QgsFeatureRequest.setOrderBy Regards Matthias On 06/01/2018 06:15 PM, Jorge Almerio wrote: > Can anyone help me how to iterate through features using a Field as a > sort order? > > > > I saw that there is a function setOrderBy > <https://qgis.org/api/classQgsFeatureRequest.html#ad9c11d4c88185fcfb0a54f8703699717>on > QgsFeatureRequest, by it seems to request a OrderBy Class argument, but > I could not get how to use it. > > > > Simple example: > > " > > lyr = iface.activeLayer() > > prov = lyr.dataProvider() > > for feature in prov.getFeatures(QgsFeatureRequest()): > > print feature.id() > > " > > > > Thank you > > > > _______________________________________________ > QGIS-Developer mailing list > QGIS-Developer@lists.osgeo.org > List info: https://lists.osgeo.org/mailman/listinfo/qgis-developer > Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-developer > _______________________________________________ QGIS-Developer mailing list QGIS-Developer@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-developer Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-developer _______________________________________________ QGIS-Developer mailing list QGIS-Developer@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-developer Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-developer