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()#

This signal is emitted when the first row changes.

PySide6.QtCharts.QVXYModelMapper.modelReplaced()#

This signal is emitted when the model that the mapper is connected to changes.

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()#

This signal is emitted when the number of rows changes.

PySide6.QtCharts.QVXYModelMapper.seriesReplaced()#

This signal is emitted when the series that the mapper is connected to changes.

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()#

This signal is emitted when the column that contains the x-coordinates of data points changes.

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()#

This signal is emitted when the column that contains the y-coordinates of data points changes.