PySide6.QtGraphs.QBarModelMapper¶
- class QBarModelMapper¶
The
QBarModelMapper
class is a model mapper for bar series. More…Added in version 6.8.
Synopsis¶
Properties¶
countᅟ
- Number of rows or columns of the model that are mapped as the data for the bar seriesfirstᅟ
- Row or column of the model that contains the first values of the bar sets in the bar seriesfirstBarSetSectionᅟ
- Section of the model that is used as the data source for the first bar setlastBarSetSectionᅟ
- Section of the model that is used as the data source for the last bar setmodelᅟ
- Data model that is used by the mapperorientationᅟ
- Tells the modelmapper how to map data from a model. If Qt::Vertical is used, each of the model’s columns defines a bar set, and the model’s rows define the categories. When the orientation is set to Qt::Horizontal, each of the model’s rows defines a bar set, and the model’s columns define categoriesseriesᅟ
- Bar series that is used by the mapper
Methods¶
def
__init__()
def
count()
def
first()
def
model()
def
orientation()
def
series()
def
setCount()
def
setFirst()
def
setModel()
def
setOrientation()
def
setSeries()
Signals¶
def
countChanged()
def
firstChanged()
def
modelChanged()
def
seriesChanged()
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 graph. A model mapper is used to create a connection between a data model and
QBarSeries
.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.
Note
Properties can be used directly when
from __feature__ import true_property
is used or via accessor functions otherwise.- property countᅟ: int¶
This property holds The number of rows or columns of the model that are mapped as the data for the bar series..
The default value is
-1
which is also the minimum. The count is limited by the number of model’s rows/columns.See also
- Access functions:
Signal
countChanged()
- property firstᅟ: int¶
This property holds The row or column of the model that contains the first values of the bar sets in the bar series..
The minimum and default value is 0.
See also
- Access functions:
Signal
firstChanged()
- property firstBarSetSectionᅟ: int¶
This property holds The section of the model that is used as the data source for the first bar set..
The default value is -1 (invalid mapping).
See also
- Access functions:
- property lastBarSetSectionᅟ: int¶
This property holds The section of the model that is used as the data source for the last bar set..
The default value is -1 (invalid mapping).
See also
- Access functions:
- property modelᅟ: QAbstractItemModel¶
This property holds The data model that is used by the mapper..
- Access functions:
Signal
modelChanged()
- property orientationᅟ: Qt.Orientation¶
This property holds Tells the modelmapper how to map data from a model. If
Qt::Vertical
is used, each of the model’s columns defines a bar set, and the model’s rows define the categories. When the orientation is set toQt::Horizontal
, each of the model’s rows defines a bar set, and the model’s columns define categories..The default value is
Qt::Vertical
- Access functions:
- property seriesᅟ: QBarSeries¶
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:
Signal
seriesChanged()
- count()¶
- Return type:
int
See also
Getter of property
countᅟ
.- countChanged()¶
Notification signal of property
countᅟ
.- first()¶
- Return type:
int
See also
Getter of property
firstᅟ
.- firstBarSetSection()¶
- Return type:
int
See also
Getter of property
firstBarSetSectionᅟ
.- firstBarSetSectionChanged()¶
Notification signal of property
firstBarSetSectionᅟ
.- firstChanged()¶
Notification signal of property
firstᅟ
.- lastBarSetSection()¶
- Return type:
int
See also
Getter of property
lastBarSetSectionᅟ
.- lastBarSetSectionChanged()¶
Notification signal of property
lastBarSetSectionᅟ
.- model()¶
- Return type:
See also
Getter of property
modelᅟ
.- modelChanged()¶
Notification signal of property
modelᅟ
.- orientation()¶
- Return type:
See also
Getter of property
orientationᅟ
.- orientationChanged()¶
Notification signal of property
orientationᅟ
.- series()¶
- Return type:
See also
Getter of property
seriesᅟ
.- seriesChanged()¶
Notification signal of property
seriesᅟ
.Setter of property
countᅟ
.Setter of property
firstᅟ
.- setFirstBarSetSection(newFirstBarSetSection)¶
- Parameters:
newFirstBarSetSection – int
See also
Setter of property
firstBarSetSectionᅟ
.- setLastBarSetSection(newLastBarSetSection)¶
- Parameters:
newLastBarSetSection – int
See also
Setter of property
lastBarSetSectionᅟ
.- setModel(model)¶
- Parameters:
model –
QAbstractItemModel
See also
Setter of property
modelᅟ
.- setOrientation(orientation)¶
- Parameters:
orientation –
Orientation
See also
Setter of property
orientationᅟ
.- setSeries(series)¶
- Parameters:
series –
QBarSeries
See also
Setter of property
seriesᅟ
.