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()¶
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