port Basic statistics for fields algorithm to C++

Also add new optional output a table containing calculated statistics similar to the Statistics by categories algorithm (fix qgis#46241)
alexbruy · Jul 2, 2024 · f441f08 · f441f08
1 parent 47f7b3a
commit f441f08
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diff --git a/python/plugins/processing/algs/help/qgis.yaml b/python/plugins/processing/algs/help/qgis.yaml
@@ -4,13 +4,6 @@ qgis:advancedpythonfieldcalculator: >
 qgis:barplot: >
   This algorithm creates a bar plot from a category and a layer field.
 
-qgis:basicstatisticsforfields: >
-  This algorithm generates basic statistics from the analysis of a values in a field in the attribute table of a vector layer. Numeric, date, time and string fields are supported.
-
-  The statistics returned will depend on the field type.
-
-  Statistics are generated as an HTML file.
-
 qgis:boxplot: >
   This algorithm creates a box plot from a category and a layer field.
 

diff --git a/python/plugins/processing/algs/qgis/BasicStatistics.py b/python/plugins/processing/algs/qgis/BasicStatistics.py
diff --git a/python/plugins/processing/algs/qgis/QgisAlgorithmProvider.py b/python/plugins/processing/algs/qgis/QgisAlgorithmProvider.py
@@ -28,7 +28,6 @@
 from qgis.PyQt.QtCore import QCoreApplication
 
 from .BarPlot import BarPlot
-from .BasicStatistics import BasicStatisticsForField
 from .BoxPlot import BoxPlot
 from .CheckValidity import CheckValidity
 from .Climb import Climb
@@ -89,7 +88,6 @@ def __init__(self):
 
     def getAlgs(self):
         algs = [BarPlot(),
-                BasicStatisticsForField(),
                 BoxPlot(),
                 CheckValidity(),
                 Climb(),

diff --git a/python/plugins/processing/gui/menus.py b/python/plugins/processing/gui/menus.py
@@ -52,7 +52,7 @@ def initMenusAndToolbars():
                                'native:sumlinelengths': analysisToolsMenu,
                                'native:countpointsinpolygon': analysisToolsMenu,
                                'qgis:listuniquevalues': analysisToolsMenu,
-                               'qgis:basicstatisticsforfields': analysisToolsMenu,
+                               'native:basicstatisticsforfields': analysisToolsMenu,
                                'native:nearestneighbouranalysis': analysisToolsMenu,
                                'native:meancoordinates': analysisToolsMenu,
                                'native:lineintersections': analysisToolsMenu})

diff --git a/python/plugins/processing/tests/testdata/expected/statistics_date.gml b/python/plugins/processing/tests/testdata/expected/statistics_date.gml
@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="utf-8" ?>
+<ogr:FeatureCollection
+     gml:id="aFeatureCollection"
+     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+     xsi:schemaLocation="http://ogr.maptools.org/ statistics_date.xsd"
+     xmlns:ogr="http://ogr.maptools.org/"
+     xmlns:gml="http://www.opengis.net/gml/3.2">
+  <gml:boundedBy><gml:Null /></gml:boundedBy>
+
+  <ogr:featureMember>
+    <ogr:statistics_date gml:id="statistics_date.0">
+      <ogr:count>4</ogr:count>
+      <ogr:unique>4</ogr:unique>
+      <ogr:empty>1</ogr:empty>
+      <ogr:filled>3</ogr:filled>
+      <ogr:min>2014-11-30</ogr:min>
+      <ogr:max>2016-11-30</ogr:max>
+      <ogr:range>63158400</ogr:range>
+    </ogr:statistics_date>
+  </ogr:featureMember>
+</ogr:FeatureCollection>