内容

• 特性
• 信号
• 方法
• 详细描述

BoxSet QML Type

Represents one item in a box-and-whiskers chart. 更多...

import 语句：	import QtCharts 2.2
实例化：	QBoxSet

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特性

• brushFilename : string
• count : int
• label : string
• values : list

信号

• cleared ()
• clicked ()
• doubleClicked ()
• hovered (bool status )
• pressed ()
• released ()
• valueChanged (int index )
• valuesChanged ()

方法

• void append (qreal value )
• void at (int index )
• void clear ()
• void setValue (int index , qreal value )

详细描述

A box-and-whiskers item is a graphical representation of a range and three median values that is constructed from five different values. There are two ways to specify the values. The first one is by using a constructor or the append() method. The values have to be specified in the following order: lower extreme, lower quartile, median, upper quartile, and upper extreme.

The second way is to create an empty BoxSet instance and specify the values using the setValue() 方法。

另请参阅 BoxPlotSeries .

特性文档编制

brushFilename : string

The name of the file used as a brush for the box-and-whiskers item.

count : int

The number of values of the box-and-whiskers item.

label : string

The label of the category of the box-and-whiskers item.

values : list

The values of the box-and-whiskers item. The following enumerations can be used as indexes when accessing the list of values:

常量	描述
BoxSet.LowerExtreme	The smallest value of the box-and-whiskers item.
BoxSet.LowerQuartile	The median value of the lower half of the box-and-whiskers item.
BoxSet.Median	The median value of the box-and-whiskers item.
BoxSet.UpperQuartile	The median value of the upper half of the box-and-whiskers item.
BoxSet.UpperExtreme	The largest value of the box-and-whiskers item.

另请参阅 at() and setValue() .

信号文档编制

cleared ()

This signal is emitted when all the values of the box-and-whiskers item are set to 0.

The corresponding signal handler is onCleared() .

clicked ()

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

The corresponding signal handler is onClicked() .

doubleClicked ()

This signal is emitted when the user double-clicks a box-and-whiskers item.

The corresponding signal handler is onDoubleClicked() .

hovered ( bool status )

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

The corresponding signal handler is onHovered() .

pressed ()

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

The corresponding signal handler is onPressed .

released ()

This signal is emitted when the user releases the mouse press on a box-and-whiskers item.

The corresponding signal handler is onReleased() .

valueChanged ( int index )

This signal is emitted when the value of the box-and-whiskers item specified by index 改变。

The corresponding signal handler is onValueChanged() .

valuesChanged ()

This signal is emitted when multiple values of the box-and-whiskers item change.

The corresponding signal handler is onValuesChanged() .

方法文档编制

void append ( qreal value )

Appends the new value specified by value to the end of the box-and-whiskers item.

void at ( int index )

Returns the value in the position specified by index .

void clear ()

Sets all the values of the box-and-whiskers item to 0.

void setValue ( int index , qreal value )

Sets the value specified by value in the position specified by index .