Class: QgsVectorLayerAbstractPlotDataGatherer

An abstract vector layer plot data gatherer base class.

Added in version 4.0.

Note

This is an abstract class, with methods which must be implemented by a subclass.

The following methods must be implemented: data(), QgsTask.run()

Class Hierarchy

Base classes

QgsTask	Abstract base class for long running background tasks.
QObject

Subclasses

QgsVectorLayerXyPlotDataGatherer

An vector layer plot data gatherer class for XY series.

Abstract Methods

data	Returns the plot data.

Methods

setExpressionContext	Sets the expression context used when evaluating values being gathered.
setFeatureIterator	Sets the feature iterator used to gather data from.

class qgis.core.QgsVectorLayerAbstractPlotDataGatherer

Bases: QgsTask

abstract data(self) → QgsPlotData

Returns the plot data.

Return type:

QgsPlotData

setExpressionContext(self, context: QgsExpressionContext)

Sets the expression context used when evaluating values being gathered.

Parameters:

context (QgsExpressionContext)

setFeatureIterator(self, iterator: QgsFeatureIterator)

Sets the feature iterator used to gather data from.

Parameters:

iterator (QgsFeatureIterator)