Class: QgsLinearlyInterpolatedDiagramRenderer

Alters the size of rendered diagrams using linear scaling.

Class Hierarchy

Base classes

QgsDiagramRenderer

Evaluates and returns the diagram settings relating to a diagram for a specific feature.

Abstract Methods

diagramSettings

Returns list with all diagram settings in the renderer

Methods

classificationAttributeExpression
classificationAttributeIsExpression
classificationField	Returns the field name used for interpolating the diagram size.
dataDefinedSizeLegend	Returns configuration of appearance of legend.
lowerSize
lowerValue
setClassificationAttributeExpression
setClassificationAttributeIsExpression
setClassificationField	Sets the field name used for interpolating the diagram size.
setDataDefinedSizeLegend	Configures appearance of legend.
setDiagramSettings
setLowerSize
setLowerValue
setUpperSize
setUpperValue
upperSize
upperValue

class qgis.core.QgsLinearlyInterpolatedDiagramRenderer

Bases: QgsDiagramRenderer

classificationAttributeExpression(self) → str

Return type:

str

classificationAttributeIsExpression(self) → bool

Return type:

bool

classificationField(self) → str

Returns the field name used for interpolating the diagram size.

See also

setClassificationField()

Return type:

str

dataDefinedSizeLegend(self) → QgsDataDefinedSizeLegend | None

Returns configuration of appearance of legend. Will return None if no configuration has been set.

Return type:

Optional[QgsDataDefinedSizeLegend]

abstract diagramSettings(self) → List[QgsDiagramSettings]

Returns list with all diagram settings in the renderer

Return type:

List[QgsDiagramSettings]

abstract diagramSettings(self, feature: QgsFeature, c: QgsRenderContext, s: QgsDiagramSettings) → bool

Parameters:

• feature (QgsFeature)

• c (QgsRenderContext)

• s (QgsDiagramSettings)

Return type:

bool

lowerSize(self) → QSizeF

Return type:

QSizeF

lowerValue(self) → float

Return type:

float

setClassificationAttributeExpression(self, expression: str | None)

Parameters:

expression (Optional[str])

setClassificationAttributeIsExpression(self, isExpression: bool)

Parameters:

isExpression (bool)

setClassificationField(self, field: str | None)

Sets the field name used for interpolating the diagram size.

See also

classificationField()

Parameters:

field (Optional[str])

setDataDefinedSizeLegend(self, settings: QgsDataDefinedSizeLegend | None)

Configures appearance of legend. Takes ownership of the passed settings objects.

Parameters:

settings (Optional[QgsDataDefinedSizeLegend])

setDiagramSettings(self, s: QgsDiagramSettings)

Parameters:

s (QgsDiagramSettings)

setLowerSize(self, s: QSizeF)

Parameters:

s (QSizeF)

setLowerValue(self, val: float)

Parameters:

val (float)

setUpperSize(self, s: QSizeF)

Parameters:

s (QSizeF)

setUpperValue(self, val: float)

Parameters:

val (float)

upperSize(self) → QSizeF

Return type:

QSizeF

upperValue(self) → float

Return type:

float