Add documentation and improve input parameter descriptions

rudivs · rudivs · commit bbfd6990f486 · 2018-08-17T14:21:09.000+02:00
diff --git a/python/plugins/processing/algs/help/qgis.yaml b/python/plugins/processing/algs/help/qgis.yaml
@@ -233,6 +233,13 @@ qgis:joinbylocationsummary: >
 qgis:keepnbiggestparts: >
   This algorithm takes a polygon layer and creates a new polygon layer in which multipart geometries have been removed, leaving only the n largest (in terms of area) parts.
 
+qgis:knearestconcavehull: >
+  This algorithm generates a concave hull polygon from a set of points. If the input layer is a line or polygon layer, it will use the nodes.
+
+  The number of neighbours to consider determines the concaveness of the output polygon. A lower number will result in a concave hull that follows the points very closely, while a higher number will have a smoother shape. The minimum number of neighbour points to consider is 3. A value equal to or greater than the number of points will result in a convex hull.
+
+  If a field is selected, the algorithm will group the features in the input layer using unique values in that field and generate individual polygons in the output layer for each group.
+
 qgis:lineintersections: >
   This algorithm creates point features where the lines in the Intersect layer intersect the lines in the Input layer.
 
diff --git a/python/plugins/processing/algs/qgis/ConcaveHull.py b/python/plugins/processing/algs/qgis/ConcaveHull.py
@@ -69,7 +69,7 @@ def initAlgorithm(self, config=None):
         self.addParameter(QgsProcessingParameterBoolean(self.NO_MULTIGEOMETRY,
                                                         self.tr('Split multipart geometry into singleparts geometries'), defaultValue=False))
 
-        self.addParameter(QgsProcessingParameterFeatureSink(self.OUTPUT, self.tr('Output layer'), type=QgsProcessing.TypeVectorPolygon))
+        self.addParameter(QgsProcessingParameterFeatureSink(self.OUTPUT, self.tr('Concave hull'), type=QgsProcessing.TypeVectorPolygon))
 
     def name(self):
         return 'concavehull'
diff --git a/python/plugins/processing/algs/qgis/KNearestConcaveHull.py b/python/plugins/processing/algs/qgis/KNearestConcaveHull.py
@@ -84,7 +84,7 @@ def initAlgorithm(self, config=None):
         self.addParameter(QgsProcessingParameterFeatureSource(self.INPUT,
                                                               self.tr('Input layer')))
         self.addParameter(QgsProcessingParameterNumber(self.KNEIGHBORS,
-                                                       self.tr('Number of neighbors'),
+                                                       self.tr('Number of neighboring points to consider (a lower number is more concave, a higher number is smoother)'),
                                                        QgsProcessingParameterNumber.Integer,
                                                        defaultValue=3, minValue=3))
         self.addParameter(QgsProcessingParameterField(self.FIELD,
