Q3DScatter¶

The Q3DScatter class provides methods for rendering 3D scatter graphs. More…

Synopsis¶

Functions¶

def addAxis (axis)
def addSeries (series)
def axes ()
def axisX ()
def axisY ()
def axisZ ()
def releaseAxis (axis)
def removeSeries (series)
def selectedSeries ()
def seriesList ()
def setAxisX (axis)
def setAxisY (axis)
def setAxisZ (axis)

Signals¶

def axisXChanged (axis)
def axisYChanged (axis)
def axisZChanged (axis)
def selectedSeriesChanged (series)

Detailed Description¶

This class enables developers to render scatter graphs in 3D and to view them by rotating the scene freely. Rotation is done by holding down the right mouse button and moving the mouse. Zooming is done by mouse wheel. Selection, if enabled, is done by left mouse button. The scene can be reset to default camera view by clicking mouse wheel. In touch devices rotation is done by tap-and-move, selection by tap-and-hold and zoom by pinch.

If no axes are set explicitly to Q3DScatter , temporary default axes with no labels are created. These default axes can be modified via axis accessors, but as soon any axis is set explicitly for the orientation, the default axis for that orientation is destroyed.

Q3DScatter supports more than one series visible at the same time.

How to construct a minimal Q3DScatter graph¶

First, construct Q3DScatter . Since we are running the graph as top level window in this example, we need to clear the Qt::FramelessWindowHint flag, which gets set by default:

scatter = Q3DScatter()
scatter.setFlags(scatter.flags() ^ Qt.FramelessWindowHint)

Now Q3DScatter is ready to receive data to be rendered. Add one series of 3 QVector3D items:

series = QScatter3DSeries()
data = QScatterDataArray()
data << QVector3D(0.5f, 0.5f, 0.5f) << QVector3D(-0.3f, -0.5f, -0.4f) << QVector3D(0.0f, -0.3f, 0.2f)
series.dataProxy().addItems(data)
scatter.addSeries(series)

Finally you will need to set it visible:

scatter.show()

The complete code needed to create and display this graph is:

from PySide6 import QtDataVisualization
if __name__ == "__main__":

    qputenv("QSG_RHI_BACKEND", "opengl")
    app = QGuiApplication(argc, argv)

    scatter = Q3DScatter()
    scatter.setFlags(scatter.flags() ^ Qt.FramelessWindowHint)


    series = QScatter3DSeries()
    data = QScatterDataArray()
    data << QVector3D(0.5f, 0.5f, 0.5f) << QVector3D(-0.3f, -0.5f, -0.4f) << QVector3D(0.0f, -0.3f, 0.2f)
    series.dataProxy().addItems(data)
    scatter.addSeries(series)


    scatter.show()

    sys.exit(app.exec())

And this is what those few lines of code produce:

The scene can be rotated, zoomed into, and an item can be selected to view its position, but no other interaction is included in this minimal code example. You can learn more by familiarizing yourself with the examples provided, like the Scatter Example .

See also

Q3DBars Q3DSurface Qt Data Visualization C++ Classes

class PySide6.QtDataVisualization.Q3DScatter([format=None[, parent=None]])¶

Parameters

format – PySide6.QtGui.QSurfaceFormat
parent – PySide6.QtGui.QWindow

Constructs a new 3D scatter graph with optional parent window and surface format.

PySide6.QtDataVisualization.Q3DScatter.addAxis(axis)¶

Parameters: axis – PySide6.QtDataVisualization.QValue3DAxis

Adds axis to the graph. The axes added via are not yet taken to use, is simply used to give the ownership of the axis to the graph. The axis must not be null or added to another graph.

See also

releaseAxis() setAxisX() setAxisY() setAxisZ()

PySide6.QtDataVisualization.Q3DScatter.addSeries(series)¶

Parameters: series – PySide6.QtDataVisualization.QScatter3DSeries

Adds the series to the graph. A graph can contain multiple series, but has only one set of axes. If the newly added series has specified a selected item, it will be highlighted and any existing selection will be cleared. Only one added series can have an active selection.

PySide6.QtDataVisualization.Q3DScatter.axes()¶

Return type

Returns the list of all added axes.

See also

addAxis()

PySide6.QtDataVisualization.Q3DScatter.axisX()¶

Return type: PySide6.QtDataVisualization.QValue3DAxis

This property holds The active x-axis..

PySide6.QtDataVisualization.Q3DScatter.axisXChanged(axis)¶

Parameters: axis – PySide6.QtDataVisualization.QValue3DAxis

PySide6.QtDataVisualization.Q3DScatter.axisY()¶

Return type: PySide6.QtDataVisualization.QValue3DAxis

This property holds The active y-axis..

PySide6.QtDataVisualization.Q3DScatter.axisYChanged(axis)¶

Parameters: axis – PySide6.QtDataVisualization.QValue3DAxis

PySide6.QtDataVisualization.Q3DScatter.axisZ()¶

Return type: PySide6.QtDataVisualization.QValue3DAxis

This property holds The active z-axis..

PySide6.QtDataVisualization.Q3DScatter.axisZChanged(axis)¶

Parameters: axis – PySide6.QtDataVisualization.QValue3DAxis

PySide6.QtDataVisualization.Q3DScatter.releaseAxis(axis)¶

Parameters: axis – PySide6.QtDataVisualization.QValue3DAxis

Releases the ownership of the axis back to the caller, if it is added to this graph. If the released axis is in use, a new default axis will be created and set active.

If the default axis is released and added back later, it behaves as any other axis would.