QHPieModelMapper

The QHPieModelMapper is a horizontal model mapper for pie series. More…

Synopsis

Functions

• def columnCount ()

• def firstColumn ()

• def labelsRow ()

• def setColumnCount (columnCount)

• def setFirstColumn (firstColumn)

• def setLabelsRow (labelsRow)

• def setValuesRow (valuesRow)

• def valuesRow ()

Signals

• def columnCountChanged ()

• def firstColumnChanged ()

• def labelsRowChanged ()

• def modelReplaced ()

• def seriesReplaced ()

• def valuesRowChanged ()

Detailed Description

Model mappers enable using a data model derived from the QAbstractItemModel class as a data source for a chart. A horizontal model mapper is used to create a connection between a data model and QPieSeries , so that each column in the data model defines a pie slice and each row maps to the label or the value of the pie slice.

Both model and pie series properties can be used to manipulate the data. The model mapper keeps the pie series and the data model in sync.

class PySide6.QtCharts.QHPieModelMapper([parent=None])

Parameters

parent – PySide6.QtCore.QObject

Constructs a mapper object that is a child of parent.

PySide6.QtCharts.QHPieModelMapper.columnCount()

Return type

int

This property holds The number of columns of the model that are mapped as the data for the pie series..

The minimum and default value is -1 (number limited to the number of columns in the model).

PySide6.QtCharts.QHPieModelMapper.columnCountChanged()

PySide6.QtCharts.QHPieModelMapper.firstColumn()

Return type

int

This property holds The column of the model that contains the first slice value..

The minimum and default value is 0.

PySide6.QtCharts.QHPieModelMapper.firstColumnChanged()

PySide6.QtCharts.QHPieModelMapper.labelsRow()

Return type

int

This property holds The row of the model that is kept in sync with the labels of the pie’s slices..

The default value is -1 (invalid mapping).

PySide6.QtCharts.QHPieModelMapper.labelsRowChanged()

PySide6.QtCharts.QHPieModelMapper.modelReplaced()

PySide6.QtCharts.QHPieModelMapper.seriesReplaced()

PySide6.QtCharts.QHPieModelMapper.setColumnCount(columnCount)

Parameters

columnCount – int

This property holds The number of columns of the model that are mapped as the data for the pie series..

The minimum and default value is -1 (number limited to the number of columns in the model).

PySide6.QtCharts.QHPieModelMapper.setFirstColumn(firstColumn)

Parameters

firstColumn – int

This property holds The column of the model that contains the first slice value..

The minimum and default value is 0.

PySide6.QtCharts.QHPieModelMapper.setLabelsRow(labelsRow)

Parameters

labelsRow – int

This property holds The row of the model that is kept in sync with the labels of the pie’s slices..

The default value is -1 (invalid mapping).

PySide6.QtCharts.QHPieModelMapper.setValuesRow(valuesRow)

Parameters

valuesRow – int

This property holds The row of the model that is kept in sync with the values of the pie’s slices..

The default value is -1 (invalid mapping).

PySide6.QtCharts.QHPieModelMapper.valuesRow()

Return type

int

This property holds The row of the model that is kept in sync with the values of the pie’s slices..

The default value is -1 (invalid mapping).

PySide6.QtCharts.QHPieModelMapper.valuesRowChanged()