The QBoxPlotSeries class presents data in box-and-whiskers charts. More...

Properties

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Public Functions

Reimplemented Public Functions

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Signals

Detailed Description

A box plot series acts as a container for box-and-whiskers items. Items from multiple series are grouped into categories according to their index value.

The QBarCategoryAxis class is used to add the categories to the chart's axis. Category labels have to be unique. If the same category label is defined for several box-and-whiskers items, only the first one is drawn.

See the box-and-whiskers chart example to learn how to create a box-and-whiskers chart.

See also QBoxSet and QBarCategoryAxis.

Property Documentation

boxOutlineVisible : bool

This property holds the visibility of the box outline.

Access functions:

Notifier signal:

boxWidth : qreal

This property holds the width of the box-and-whiskers item. The value indicates the relative width of the item within its category. The value can be between 0.0 and 1.0. Negative values are replaced with 0.0 and values greater than 1.0 are replaced with 1.0.

Access functions:

Notifier signal:

brush : QBrush

This property holds the brush used to fill the boxes of the box-and-whiskers items.

Access functions:

Notifier signal:

count : const int

This property holds the number of box-and-whiskers items in a box plot series.

Access functions:

Notifier signal:

pen : QPen

This property holds the pen used to draw the lines of the box-and-whiskers items.

Access functions:

Notifier signal:

Member Function Documentation

QBoxPlotSeries::QBoxPlotSeries(QObject *parent = nullptr)

Constructs an empty box plot series that is a QObject and a child of parent.

[signal] void QBoxPlotSeries::boxOutlineVisibilityChanged()

This signal is emitted when the box outline visibility changes.

Note: Notifier signal for property boxOutlineVisible.

[signal] void QBoxPlotSeries::boxWidthChanged()

This signal is emitted when the width of the box-and-whiskers item changes.

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Note: Notifier signal for property boxWidth.

[signal] void QBoxPlotSeries::boxsetsAdded(QList<QBoxSet *> sets)

This signal is emitted when the list of box-and-whiskers items specified by sets is added to the series.

[signal] void QBoxPlotSeries::boxsetsRemoved(QList<QBoxSet *> sets)

This signal is emitted when the list of box-and-whiskers items specified by sets is removed from the series.

[signal] void QBoxPlotSeries::brushChanged()

This signal is emitted when the brush used to fill the boxes of the box-and-whiskers items changes.

Note: Notifier signal for property brush.

[signal] void QBoxPlotSeries::clicked(QBoxSet *boxset)

This signal is emitted when the user clicks the box-and-whiskers item specified by boxset in the chart.

[signal] void QBoxPlotSeries::countChanged()

This signal is emitted when the number of box-and-whiskers items in the series changes.

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Note: Notifier signal for property count.

[signal] void QBoxPlotSeries::doubleClicked(QBoxSet *boxset)

This signal is emitted when the user double-clicks the box-and-whiskers item specified by boxset in the chart.

[signal] void QBoxPlotSeries::hovered(boolstatus, QBoxSet *boxset)

This signal is emitted when a mouse is hovered over the box-and-whiskers item specified by boxset in the chart. When the mouse moves over the item, status turns true, and when the mouse moves away again, it turns false.

[signal] void QBoxPlotSeries::penChanged()

This signal is emitted when the pen used to draw the lines of the box-and-whiskers items changes.

Note: Notifier signal for property pen.

[signal] void QBoxPlotSeries::pressed(QBoxSet *boxset)

This signal is emitted when the user clicks the box-and-whiskers item specified by boxset in the chart and holds down the mouse button.

[signal] void QBoxPlotSeries::released(QBoxSet *boxset)

This signal is emitted when the user releases the mouse press on the box-and-whiskers item specified by boxset in the chart.

[virtual] QBoxPlotSeries::~QBoxPlotSeries()

Removes the series from the chart.

bool QBoxPlotSeries::append(QBoxSet *set)

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Adds a single box-and-whiskers item specified by set to the series and takes ownership of it. If the item is null or it already belongs to the series, it will not be appended. Returns true if appending succeeded.

bool QBoxPlotSeries::append(QList<QBoxSet *> sets)

Adds a list of box-and-whiskers items specified by sets to the series and takes ownership of them. If the list is null or the items already belong to the series, it will not be appended. Returns true if appending succeeded.

QList<QBoxSet *> QBoxPlotSeries::boxSets() const

Returns a list of box-and-whiskers items in a box plot series. Keeps the ownership of the items.

void QBoxPlotSeries::clear()

Removes all box-and-whiskers items from the series and permanently deletes them.

int QBoxPlotSeries::count() const

Returns the number of box-and-whiskers items in a box plot series.

Note: Getter function for property count.

bool QBoxPlotSeries::insert(intindex, QBoxSet *set)

Inserts a box-and-whiskers item specified by set to a series at the position specified by index and takes ownership of the item. If the item is null or already belongs to the series, it will not be appended. Returns true if inserting succeeds.

bool QBoxPlotSeries::remove(QBoxSet *set)

Removes the box-and-whiskers item specified by set from the series and permanently deletes it if the removal succeeds. Returns true if the item was removed.

bool QBoxPlotSeries::take(QBoxSet *set)

Takes the box-and-whiskers item specified by set from the series. Does not delete the item.

Note: The series remains the item's parent object. You must set the parent object to take full ownership.

Returns true if the take operation succeeds.

[override virtual] QAbstractSeries::SeriesType QBoxPlotSeries::type() const

Reimplements an access function for property: QAbstractSeries::type.

Returns the type of the series.

See also QAbstractSeries and SeriesType.

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Hi everyone,

I've got a poser here. I use the QCustomPlot in a good old desktop application to my full satisfaction. But now I need to extend the user interface to the web, I'd like to take the qualities of the QCP with me. Maybe I'm not the first one to try this, maybe some of you out there (or you, derManu) have already thought about this or even better have it done. So the thing is:

Is it possible to run QCustomPlot outside the GUI thread to paint the plot on, say, a QImage?

The first task is clear - to get rid of the QWidget and substitute the geometry, events etc. This one is clear and I'm already half way through. But before I'll dig deep into the 'Paint It Black' stuff, I just wanted to ask advice. I myself am not an expert on painting in threads in Qt and will much appreciate any sort of advice / help / ready-made QCP-in-Threads source as well as a possible no-go warning.

Thanks in advance!

Pavel