Allow clearing heatmap weighting field

Fixes #20256 (cherry picked from commit 3961fa2)
qgis · Jun 19, 2020 · e3353e8 · e3353e8
1 parent a36a191
commit e3353e8
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/src/gui/symbology/qgsheatmaprendererwidget.cpp b/src/gui/symbology/qgsheatmaprendererwidget.cpp
@@ -96,6 +96,7 @@ QgsHeatmapRendererWidget::QgsHeatmapRendererWidget( QgsVectorLayer *layer, QgsSt
   mRadiusUnitWidget->setUnits( QgsUnitTypes::RenderUnitList() << QgsUnitTypes::RenderMillimeters << QgsUnitTypes::RenderPixels << QgsUnitTypes::RenderMapUnits
                                << QgsUnitTypes::RenderPoints << QgsUnitTypes::RenderInches );
   mWeightExpressionWidget->registerExpressionContextGenerator( this );
+  mWeightExpressionWidget->setAllowEmptyFieldName( true );
 
   if ( renderer )
   {