QHBarModelMapper#

The QHBarModelMapper class is a horizontal model mapper for bar series. More…

Inheritance diagram of PySide6.QtCharts.QHBarModelMapper

Synopsis#

Properties#

  • columnCount - Number of columns of the model that are mapped as the data for the bar series

  • firstBarSetRow - Row of the model that is used as the data source for the first bar set

  • firstColumn - Column of the model that contains the first values of the bar sets in the bar series

  • lastBarSetRow - Row of the model that is used as the data source for the last bar set

  • model - Defines the model that is used by the mapper

  • series - Bar series that is used by the mapper

Functions#

Signals#

Note

This documentation may contain snippets that were automatically translated from C++ to Python. We always welcome contributions to the snippet translation. If you see an issue with the translation, you can also let us know by creating a ticket on https:/bugreports.qt.io/projects/PYSIDE

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 QAbstractBarSeries , so that each row in the data model defines a bar set and each column maps to a category in a bar series.

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

The model mapper ensures that all the bar sets in the bar series have equal sizes. Therefore, adding or removing a value from a bar set causes the same change to be made in all the bar sets in the bar series.

See also

QVBarModelMapper

class PySide6.QtCharts.QHBarModelMapper([parent=None])#
Parameters:

parent – PySide6.QtCore.QObject

Constructs a mapper object that is a child of parent.

Note

Properties can be used directly when from __feature__ import true_property is used or via accessor functions otherwise.

property PᅟySide6.QtCharts.QHBarModelMapper.columnCount: int#

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

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

Access functions:
property PᅟySide6.QtCharts.QHBarModelMapper.firstBarSetRow: int#

This property holds The row of the model that is used as the data source for the first bar set..

The default value is -1 (invalid mapping).

Access functions:
property PᅟySide6.QtCharts.QHBarModelMapper.firstColumn: int#

This property holds The column of the model that contains the first values of the bar sets in the bar series..

The minimum and default value is 0.

Access functions:
property PᅟySide6.QtCharts.QHBarModelMapper.lastBarSetRow: int#

This property holds The row of the model that is used as the data source for the last bar set..

The default value is -1 (invalid mapping).

Access functions:
property PᅟySide6.QtCharts.QHBarModelMapper.model: PySide6.QtCore.QAbstractItemModel#

This property Defines the model that is used by the mapper..

Access functions:
property PᅟySide6.QtCharts.QHBarModelMapper.series: PySide6.QtCharts.QAbstractBarSeries#

This property holds The bar series that is used by the mapper..

All the data in the series is discarded when it is set to the mapper. When a new series is specified, the old series is disconnected (but it preserves its data).

Access functions:
PySide6.QtCharts.QHBarModelMapper.columnCount()#
Return type:

int

See also

setColumnCount()

Getter of property columnCount .

PySide6.QtCharts.QHBarModelMapper.columnCountChanged()#

This signal is emitted when the number of columns changes.

Notification signal of property columnCount .

PySide6.QtCharts.QHBarModelMapper.firstBarSetRow()#
Return type:

int

See also

setFirstBarSetRow()

Getter of property firstBarSetRow .

PySide6.QtCharts.QHBarModelMapper.firstBarSetRowChanged()#

This signal is emitted when the first bar set row changes.

Notification signal of property firstBarSetRow .

PySide6.QtCharts.QHBarModelMapper.firstColumn()#
Return type:

int

See also

setFirstColumn()

Getter of property firstColumn .

PySide6.QtCharts.QHBarModelMapper.firstColumnChanged()#

This signal is emitted when the first column changes.

Notification signal of property firstColumn .

PySide6.QtCharts.QHBarModelMapper.lastBarSetRow()#
Return type:

int

See also

setLastBarSetRow()

Getter of property lastBarSetRow .

PySide6.QtCharts.QHBarModelMapper.lastBarSetRowChanged()#

This signal is emitted when the last bar set row changes.

Notification signal of property lastBarSetRow .

PySide6.QtCharts.QHBarModelMapper.modelReplaced()#

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

Notification signal of property model .

PySide6.QtCharts.QHBarModelMapper.seriesReplaced()#

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

Notification signal of property series .

PySide6.QtCharts.QHBarModelMapper.setColumnCount(columnCount)#
Parameters:

columnCount – int

See also

columnCount()

Setter of property columnCount .

PySide6.QtCharts.QHBarModelMapper.setFirstBarSetRow(firstBarSetRow)#
Parameters:

firstBarSetRow – int

See also

firstBarSetRow()

Setter of property firstBarSetRow .

PySide6.QtCharts.QHBarModelMapper.setFirstColumn(firstColumn)#
Parameters:

firstColumn – int

See also

firstColumn()

Setter of property firstColumn .

PySide6.QtCharts.QHBarModelMapper.setLastBarSetRow(lastBarSetRow)#
Parameters:

lastBarSetRow – int

See also

lastBarSetRow()

Setter of property lastBarSetRow .