QScatter3DSeries Class

The QScatter3DSeries class represents a data series in a 3D scatter graph. 更多...

头：	#include <QScatter3DSeries>
CMake:	find_package(Qt6 REQUIRED COMPONENTS Graphs) target_link_libraries(mytarget PRIVATE Qt6::Graphs)
qmake:	QT += graphs
在 QML：	Scatter3DSeries
继承：	QAbstract3DSeries

• 所有成员列表，包括继承成员
• QScatter3DSeries is part of Qt Graphs C++ Classes for 3D .

特性

• dataArray : QScatterDataArray
• dataProxy : QScatterDataProxy*
• itemSize : float
• selectedItem : qsizetype

公共函数

	QScatter3DSeries (QObject * parent = nullptr)
	QScatter3DSeries (QScatterDataProxy * dataProxy , QObject * parent = nullptr)
virtual	~QScatter3DSeries () override
void	clearArray ()
QScatterDataArray	dataArray () &&
const QScatterDataArray &	dataArray () const &
QScatterDataProxy *	dataProxy () const
float	itemSize () const
qsizetype	selectedItem () const
void	setDataArray (const QScatterDataArray & newDataArray )
void	setDataProxy (QScatterDataProxy * proxy )
void	setItemSize (float size )
void	setSelectedItem (qsizetype index )

信号

void	dataArrayChanged (const QScatterDataArray & array )
void	dataProxyChanged (QScatterDataProxy * proxy )
void	itemSizeChanged (float size )
void	selectedItemChanged (qsizetype index )

静态公共成员

qsizetype

invalidSelectionIndex ()

详细描述

This class manages the series-specific visual elements, as well as the series data (via a data proxy).

Regarding the proxy-series relationship, it is crucial to highlight a couple of key points. In this context, data is stored in series and users can access the dataset through the series. This series is controlled or represented by a proxy object. Thus, the proxy can be used to manage various operations on the data and update the actual dataset. However, it is necessary to create a series associated with this proxy to edit the dataset.

If no data proxy is set explicitly for the series, the series creates a default proxy. Setting another proxy will destroy the existing proxy and all data added to the series.

QScatter3DSeries supports the following format tags for QAbstract3DSeries::setItemLabelFormat ():

@xTitle	Title from x-axis
@yTitle	Title from y-axis
@zTitle	Title from z-axis
@xLabel	Item value formatted using the format of the x-axis. For more information, see QValue3DAxis::labelFormat .
@yLabel	Item value formatted using the format of the y-axis. For more information, see QValue3DAxis::labelFormat .
@zLabel	Item value formatted using the format of the z-axis. For more information, see QValue3DAxis::labelFormat .
@seriesName	Name of the series

例如：

proxy->setItemLabelFormat(QStringLiteral("@yTitle for (@xLabel, @zLabel): %.1f"));
					

另请参阅 Qt Graphs Data Handling with 3D .

特性文档编制

dataArray : QScatterDataArray

Data array for the series.

Holds the reference to the data array.

dataArrayChanged signal is emitted when data array is set, unless newDataArray is identical to the previous one.

注意： Before doing anything regarding the data array, a series must be created for the relevant proxy.

访问函数：

const QScatterDataArray &	dataArray () const &
QScatterDataArray	dataArray () &&
void	setDataArray (const QScatterDataArray & newDataArray )

通知程序信号：

void	dataArrayChanged (const QScatterDataArray & array )

另请参阅 clearArray ().

dataProxy : QScatterDataProxy *

This property holds the active data proxy.

Sets the active data proxy for the series to proxy . The series assumes ownership of any proxy set to it and deletes any previously set proxy when a new one is added. The proxy argument cannot be null or set to another series.

访问函数：

QScatterDataProxy *	dataProxy () const
void	setDataProxy (QScatterDataProxy * proxy )

通知程序信号：

void	dataProxyChanged (QScatterDataProxy * proxy )

itemSize : float

Item size for the series.

The size must be between 0.0f and 1.0f . Setting the size to 0.0f causes the item size to be automatically scaled based on the total number of items in all the series for the graph.

The preset default is 0.0f .

访问函数：

float	itemSize () const
void	setItemSize (float size )

通知程序信号：

void	itemSizeChanged (float size )

selectedItem : qsizetype

This property holds the item that is selected in the series.

Selects the item at the index index in the data array of the series. Only one item can be selected at a time.

To clear the selection from this series, invalidSelectionIndex () is set as index . If this series is added to a graph, the graph can adjust the selection according to user interaction or if it becomes invalid. Selecting an item on another added series will also clear the selection.

Removing items from or inserting items into the series before the selected item will adjust the selection so that the same item will stay selected.

访问函数：

qsizetype	selectedItem () const
void	setSelectedItem (qsizetype index )

通知程序信号：

void	selectedItemChanged (qsizetype index )

另请参阅 Q3DGraphsWidgetItem::clearSelection ().

成员函数文档编制

[explicit] QScatter3DSeries:: QScatter3DSeries ( QObject * parent = nullptr)

Constructs a scatter 3D series with the parent parent .

[explicit] QScatter3DSeries:: QScatter3DSeries ( QScatterDataProxy * dataProxy , QObject * parent = nullptr)

Constructs a scatter 3D series with the data proxy dataProxy and the parent parent .

[override virtual noexcept] QScatter3DSeries:: ~QScatter3DSeries ()

Deletes the scatter 3D series.

void QScatter3DSeries:: clearArray ()

Clears the data array.

[static] qsizetype QScatter3DSeries:: invalidSelectionIndex ()

Returns an invalid index for selection. This index is set to the selectedItem property to clear the selection from this series.

另请参阅 Q3DGraphsWidgetItem::clearSelection ().

内容

1. 特性

2. 公共函数

3. 信号

4. 静态公共成员

5. 详细描述