QwtLogTransform类 参考

对数变换 更多...

#include <qwt_transform.h>

类 QwtLogTransform 继承关系图:

Public 成员函数
	QwtLogTransform ()
	Constructor
virtual	~QwtLogTransform ()
	Destructor
virtual double	transform (double value) const override
	Transformation function - log(value)
virtual double	invTransform (double value) const override
	Inverse transformation function - exp(value)
virtual double	bounded (double value) const override
	Bounded function - qBound(LogMin, value, LogMax)
virtual QwtTransform *	copy () const override
	Clone of the transformation
Public 成员函数 继承自 QwtTransform
	QwtTransform ()
	Constructor
virtual	~QwtTransform ()
	Destructor

静态 Public 属性
static const double	LogMin = 1.0e-150
	Smallest allowed value for logarithmic scales: 1.0e-150
static const double	LogMax = 1.0e150
	Largest allowed value for logarithmic scales: 1.0e150

详细描述

对数变换

构造及析构函数说明

QwtLogTransform()

QwtLogTransform::QwtLogTransform

(

)

Constructor

默认构造函数

~QwtLogTransform()

QwtLogTransform::~QwtLogTransform ( )

virtual

Destructor

析构函数

成员函数说明

bounded()

double QwtLogTransform::bounded ( double  value ) const

overridevirtual

Bounded function - qBound(LogMin, value, LogMax)

边界函数

重载 QwtTransform .

copy()

QwtTransform * QwtLogTransform::copy ( ) const

overridevirtual

Clone of the transformation

变换的克隆

实现了 QwtTransform.

invTransform()

double QwtLogTransform::invTransform ( double  value ) const

overridevirtual

Inverse transformation function - exp(value)

反变换函数

实现了 QwtTransform.

transform()

double QwtLogTransform::transform ( double  value ) const

overridevirtual

Transformation function - log(value)

变换函数

实现了 QwtTransform.

类成员变量说明

LogMax

const double QwtLogTransform::LogMax = 1.0e150

static

Largest allowed value for logarithmic scales: 1.0e150

对数刻度允许的最大值：1.0e150

LogMin

const double QwtLogTransform::LogMin = 1.0e-150

static

Smallest allowed value for logarithmic scales: 1.0e-150

对数刻度允许的最小值：1.0e-150

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该类的文档由以下文件生成:

• /home/runner/work/QWT/QWT/src/plot/qwt_transform.h
• /home/runner/work/QWT/QWT/src/plot/qwt_transform.cpp