QVXYModelMapper

The QVXYModelMapper class is a vertical model mapper for line, spline, and scatter series. More…

Synopsis

Functions

• def firstRow ()

• def rowCount ()

• def setFirstRow (firstRow)

• def setRowCount (rowCount)

• def setXColumn (xColumn)

• def setYColumn (yColumn)

• def xColumn ()

• def yColumn ()

Signals

• def firstRowChanged ()

• def modelReplaced ()

• def rowCountChanged ()

• def seriesReplaced ()

• def xColumnChanged ()

• def yColumnChanged ()

Detailed Description

Model mappers enable using a data model derived from the QAbstractItemModel class as a data source for a chart. A vertical model mapper is used to create a connection between a line, spline, or scatter series and the data model that has X and Y columns for the coordinates and holds the data points for the XYSeries as rows. A TableModel is a natural choice for the model.

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

See also

QHXYModelMapper QXYSeries Model Data Example

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

Parameters

parent – PySide6.QtCore.QObject

Constructs a mapper object that is a child of parent.

PySide6.QtCharts.QVXYModelMapper.firstRow()

Return type

int

This property holds The row of the model that contains the data for the first point of the series..

The minimum and default value is 0.

PySide6.QtCharts.QVXYModelMapper.firstRowChanged()

PySide6.QtCharts.QVXYModelMapper.modelReplaced()

PySide6.QtCharts.QVXYModelMapper.rowCount()

Return type

int

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

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

PySide6.QtCharts.QVXYModelMapper.rowCountChanged()

PySide6.QtCharts.QVXYModelMapper.seriesReplaced()

PySide6.QtCharts.QVXYModelMapper.setFirstRow(firstRow)

Parameters

firstRow – int

This property holds The row of the model that contains the data for the first point of the series..

The minimum and default value is 0.

PySide6.QtCharts.QVXYModelMapper.setRowCount(rowCount)

Parameters

rowCount – int

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

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

PySide6.QtCharts.QVXYModelMapper.setXColumn(xColumn)

Parameters

xColumn – int

This property holds The column of the model that contains the x-coordinates of data points..

The default value is -1 (invalid mapping).

PySide6.QtCharts.QVXYModelMapper.setYColumn(yColumn)

Parameters

yColumn – int

This property holds The column of the model that contains the y-coordinates of data points..

The default value is -1 (invalid mapping).

PySide6.QtCharts.QVXYModelMapper.xColumn()

Return type

int

This property holds The column of the model that contains the x-coordinates of data points..

The default value is -1 (invalid mapping).

PySide6.QtCharts.QVXYModelMapper.xColumnChanged()

PySide6.QtCharts.QVXYModelMapper.yColumn()

Return type

int

This property holds The column of the model that contains the y-coordinates of data points..

The default value is -1 (invalid mapping).

PySide6.QtCharts.QVXYModelMapper.yColumnChanged()