Q3DBars *graphWindow = new Q3DBars;
graphWindow->setFlags(graphWindow->flags() ^ Qt::FramelessWindowHint);

Property Documentation

activeInputHandler : QAbstract3DInputHandler *

The active inputHandler used in the graph. Implicitly calls addInputHandler() to transfer ownership of the inputHandler to this graph.

If the inputHandler is null, no input handler will be active after this call.

Access functions:

Notifier signal:

See also addInputHandler() and releaseInputHandler().

activeTheme : Q3DTheme *

The active theme to be used for the graph. Implicitly calls addTheme() to transfer ownership of the theme to this graph. If the theme is null, a temporary default theme is created. This temporary theme is destroyed if any theme is explicitly set later. Properties of the theme can be modified even after setting it, and the modifications take effect immediately.

Access functions:

Notifier signal:

aspectRatio : qreal

The aspect ratio is the ratio of the graph scaling between the longest axis on the horizontal plane and the Y-axis. Defaults to 2.0.

Note: Has no effect on Q3DBars.

This property was introduced in QtDataVisualization 1.1.

Access functions:

Notifier signal:

See also horizontalAspectRatio.

currentFps : const qreal

When fps measuring is enabled, the results for the last second are stored in this read-only property. It takes at least a second before this value updates after measurement is activated.

This property was introduced in QtDataVisualization 1.1.

Access functions:

Notifier signal:

See also measureFps.

horizontalAspectRatio : qreal

The horizontal aspect ratio is the ratio of the graph scaling between the X and Z axes. Value of 0.0 indicates automatic scaling according to axis ranges. Defaults to 0.0.

Note: Has no effect on Q3DBars, which handles scaling on the horizontal plane via barThickness and barSpacing properties. Polar graphs also ignore this property.

This property was introduced in QtDataVisualization 1.2.

Access functions:

Notifier signal:

See also aspectRatio, polar, Q3DBars::barThickness, and Q3DBars::barSpacing.

locale : QLocale

Sets the locale used for formatting various numeric labels. Defaults to "C" locale.

This property was introduced in QtDataVisualization 1.2.

Access functions:

Notifier signal:

See also QValue3DAxis::labelFormat.

margin : qreal

This property contains the absolute value used for graph margin. The graph margin is the space left between the edge of the plottable graph area and the edge of the graph background. If the margin value is negative, the margins are determined automatically and can vary according to size of the items in the series and the type of the graph. The value is interpreted as a fraction of Y-axis range, provided the graph aspect ratios have not beed changed from the defaults. Defaults to -1.0.

Note: Having smaller than the automatically determined margin on scatter graph can cause the scatter items at the edges of the graph to overlap with the graph background.

Note: On scatter and surface graphs, if the margin is comparatively small to the axis label size, the positions of the edge labels of the axes are adjusted to avoid overlap with the edge labels of the neighboring axes.

This property was introduced in QtDataVisualization 1.2.

Access functions:

Notifier signal:

measureFps : bool

If true, the rendering is done continuously instead of on demand, and currentFps property is updated. Defaults to false.

This property was introduced in QtDataVisualization 1.1.

Access functions:

Notifier signal:

See also currentFps.

optimizationHints : OptimizationHints

Defines if the rendering optimization is default or static. Default mode provides the full feature set at reasonable performance. Static mode optimizes graph rendering and is ideal for large non-changing data sets. It is slower with dynamic data changes and item rotations. Selection is not optimized, so using it with massive data sets is not advisable. Static works only on the Scatter graph. Defaults to OptimizationDefault.

Note: On some environments, large graphs using static optimization may not render, because all of the items are rendered using a single draw call, and different graphics drivers have different maximum vertice counts per call that they support. This is mostly an issue on 32bit and/or OpenGL ES2 platforms. To work around this issue, choose an item mesh with low vertex count or use the point mesh.

Access functions:

Notifier signal:

See also QAbstract3DSeries::mesh.

orthoProjection : bool

If true, orthographic projection will be used for displaying the graph.

Note: Orthographic projection can be used to create 2D graphs by replacing the default input handler with one that doesn't allow rotating the graph and setting the camera to view the graph directly from the side or from the top. Also, axis labels typically need to be rotated when viewing the graph from the sides. Defaults to false.

Note: Shadows will be disabled when set to true.

This property was introduced in QtDataVisualization 1.1.

Access functions:

Notifier signal:

See also QAbstract3DAxis::labelAutoRotation and Q3DCamera::cameraPreset.

polar : bool

If true, the horizontal axes are changed into polar axes. The X axis becomes the angular axis and the Z axis becomes the radial axis. Polar mode is not available for bar graphs.

Defaults to false.

This property was introduced in QtDataVisualization 1.2.

Access functions:

Notifier signal:

See also orthoProjection and radialLabelOffset.

queriedGraphPosition : const QVector3D

This read-only property contains the latest graph position values along each axis queried using Q3DScene::graphPositionQuery. The values are normalized to range [-1, 1]. If the queried position was outside the graph bounds, the values will not reflect the real position, but will instead be some undefined position outside the range [-1, 1]. The value will be undefined before any queries are made.

There isn't a single correct 3D coordinate to match to each specific screen position, so to be consistent, the queries are always done against the inner sides of an invisible box surrounding the graph.

Note: Bar graphs only allow querying graph position at the graph floor level, so the Y-value is always zero for bar graphs and the valid queries can be only made at screen positions that contain the floor of the graph.

This property was introduced in QtDataVisualization 1.2.

Access functions:

Notifier signal:

See also Q3DScene::graphPositionQuery.

radialLabelOffset : float

This property specifies the normalized horizontal offset for the axis labels of the radial polar axis. The value 0.0 indicates the labels should be drawn next to the 0-angle angular axis grid line. The value 1.0 indicates the labels are drawn on their normal place at the edge of the graph background. This property is ignored if polar property value is false. Defaults to 1.0.

This property was introduced in QtDataVisualization 1.2.

Access functions:

Notifier signal:

See also polar.

reflection : bool

Sets floor reflections on or off. Defaults to false.

Note: Affects only Q3DBars.

Note: In Q3DBars graphs holding both positive and negative values, reflections are not supported for custom items that intersect the floor plane. In that case, reflections should be turned off to avoid incorrect rendering.

Note: If using custom surface format, stencil buffer needs to be defined (QSurfaceFormat::setStencilBufferSize()) for reflections to work.

This property was introduced in QtDataVisualization 1.2.

Access functions:

Notifier signal:

See also reflectivity.

reflectivity : qreal

Adjusts floor reflectivity, larger number being more reflective. Valid range is [0...1]. Defaults to 0.5.

Note: Affects only Q3DBars.

This property was introduced in QtDataVisualization 1.2.

Access functions:

Notifier signal:

See also reflection.

scene : Q3DScene * const

This property is read-only and contains the Q3DScene pointer that can be used to manipulate the scene and access the scene elements, such as the active camera.

Access functions:

selectedElement : const ElementType

Can be used to query the selected element type. Type is valid until the next selectedElementChanged signal.

selectedElementChanged signal is emitted when a selection is made in the graph.

Signal can be used for example for implementing custom input handlers, as demonstrated in this example.

This property was introduced in QtDataVisualization 1.1.

Access functions:

Notifier signal:

See also selectedLabelIndex(), selectedAxis(), selectedCustomItemIndex(), selectedCustomItem(), Q3DBars::selectedSeries(), Q3DScatter::selectedSeries(), Q3DSurface::selectedSeries(), and Q3DScene::setSelectionQueryPosition().

selectionMode : SelectionFlags

Sets selection mode to a combination of SelectionFlags. It is preset to SelectionItem by default. Different graph types support different selection modes. See SelectionFlags documentation for details.

Access functions:

Notifier signal:

shadowQuality : ShadowQuality

Sets the shadow quality to one of the ShadowQuality enum values. It is preset to ShadowQualityMedium by default.

Note: If setting the shadow quality to a certain level fails, the level is lowered until it is successfully set. The shadowQualityChanged signal is emitted for each time a change is done.

Access functions:

Notifier signal:

#include <QtDataVisualization/qutils.h>

// ...

Q3DBars *graph = new Q3DBars(QtDataVisualization::qDefaultSurfaceFormat(false));

#include <QtDataVisualization/qutils.h>

// ...

QQuickView viewer;
viewer.setFormat(QtDataVisualization::qDefaultSurfaceFormat());