SAGA Points Statistics for Polygons can work just in SAGA 2.10

python/plugins/processing/saga/description/2.1_PointStatisticsforPolygons.txt

@@ -0,0 +1,14 @@
+Point Statistics for Polygons
+shapes_polygons
+ParameterVector|POINTS|Points|0|False
+ParameterVector|POLYGONS|Polygons|2|False
+ParameterTableField|FIELDS|Attribute Table field|POINTS|-1|False
+ParameterSelection|FIELD_NAME|Field Naming Choice|[0] variable type + original name;[1] original name + variable type;[2] original name;[3] variable type
+ParameterBoolean|SUM             |Sum|True
+ParameterBoolean|AVG             |Mean|True
+ParameterBoolean|VAR             |Variance|True
+ParameterBoolean|DEV             |Deviation|True
+ParameterBoolean|MIN             |Minimum|True
+ParameterBoolean|MAX             |Maximum|True
+ParameterBoolean|NUM             |Count|True
+OutputVector|STATISTICS|Statistics