QwtLogTransform Class Reference

Logarithmic transformation. More...

#include <qwt_transform.h>

Inheritance diagram for QwtLogTransform:

Public Member Functions
	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 Member Functions inherited from QwtTransform
	QwtTransform ()
	Constructor.
virtual	~QwtTransform ()
	Destructor.

Static Public Attributes
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.

Detailed Description

Logarithmic transformation.

Constructor & Destructor Documentation

QwtLogTransform()

QwtLogTransform::QwtLogTransform

(

)

Constructor.

Default constructor .

~QwtLogTransform()

QwtLogTransform::~QwtLogTransform ( )

virtual

Destructor.

Destructor .

Member Function Documentation

bounded()

double QwtLogTransform::bounded ( double  value ) const

overridevirtual

Bounded function - qBound(LogMin, value, LogMax)

Bounded function.

Reimplemented from QwtTransform.

copy()

QwtTransform * QwtLogTransform::copy ( ) const

overridevirtual

Clone of the transformation.

Implements QwtTransform.

invTransform()

double QwtLogTransform::invTransform ( double  value ) const

overridevirtual

Inverse transformation function - exp(value)

Inverse transform function.

Implements QwtTransform.

transform()

double QwtLogTransform::transform ( double  value ) const

overridevirtual

Transformation function - log(value)

Transform function.

Implements QwtTransform.

Member Data Documentation

LogMax

const double QwtLogTransform::LogMax = 1.0e150

static

Largest allowed value for logarithmic scales: 1.0e150.

Largest allowed value for logarithmic scales: 1.0e150

LogMin

const double QwtLogTransform::LogMin = 1.0e-150

static

Smallest allowed value for logarithmic scales: 1.0e-150.

Smallest allowed value for logarithmic scales: 1.0e-150

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The documentation for this class was generated from the following files:

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