Merge pull request #3503 from rldhont/processing_algs_qgis_intersection

[processing] bugfix: intersection QGIS algorithm
qgis · Sep 19, 2016 · 347a8c9 · 347a8c9
2 parents f5ffbbf + 3661bc3
commit 347a8c9
Showing 1 changed file with 4 additions and 2 deletions.
diff --git a/python/plugins/processing/algs/qgis/Intersection.py b/python/plugins/processing/algs/qgis/Intersection.py
@@ -96,8 +96,10 @@ def processAlgorithm(self, progress):
                     int_geom = QgsGeometry(geom.intersection(tmpGeom))
                     if int_geom.wkbType() == QgsWkbTypes.Unknown or QgsWkbTypes.flatType(int_geom.geometry().wkbType()) == QgsWkbTypes.GeometryCollection:
                         int_com = geom.combine(tmpGeom)
-                        int_sym = geom.symDifference(tmpGeom)
-                        int_geom = QgsGeometry(int_com.difference(int_sym))
+                        int_geom = QgsGeometry()
+                        if int_com:
+                            int_sym = geom.symDifference(tmpGeom)
+                            int_geom = QgsGeometry(int_com.difference(int_sym))
                     if int_geom.isGeosEmpty() or not int_geom.isGeosValid():
                         ProcessingLog.addToLog(ProcessingLog.LOG_ERROR,
                                                self.tr('GEOS geoprocessing error: One or '