QwtPowerTransform Class Reference

A transformation using pow() More...

#include <qwt_transform.h>

Inheritance diagram for QwtPowerTransform:

Public Member Functions
	QwtPowerTransform (double exponent)
	Constructor with exponent parameter.
	~QwtPowerTransform () override
	Destructor.
virtual double	transform (double value) const override
	Transformation function - pow() preserving sign.
virtual double	invTransform (double value) const override
	Inverse transformation function - inverse pow() preserving sign.
virtual QwtTransform *	copy () const override
	Clone of the transformation.
Public Member Functions inherited from QwtTransform
	QwtTransform ()
	Constructor.
virtual	~QwtTransform ()
	Destructor.
virtual double	bounded (double value) const
	Modify value to be a valid value for the transformation.

Detailed Description

A transformation using pow()

QwtPowerTransform preserves the sign of a value. F.e. a transformation with a factor of 2 transforms a value of -3 to -9 and v.v. Thus QwtPowerTransform can be used for scales including negative values.

Constructor & Destructor Documentation

QwtPowerTransform()

QwtPowerTransform::QwtPowerTransform ( double  exponent )

explicit

Constructor with exponent parameter.

Constructor.

Parameters

exponent

Exponent

Member Function Documentation

copy()

QwtTransform * QwtPowerTransform::copy ( ) const

overridevirtual

Clone of the transformation.

Returns

New QwtPowerTransform instance

Implements QwtTransform.

invTransform()

double QwtPowerTransform::invTransform ( double  value ) const

overridevirtual

Inverse transformation function - inverse pow() preserving sign.

Inverse transform function.

Parameters

value

Value to be transformed

Returns

Inverse exponentiation preserving the sign

Implements QwtTransform.

transform()

double QwtPowerTransform::transform ( double  value ) const

overridevirtual

Transformation function - pow() preserving sign.

Transform function.

Parameters

value

Value to be transformed

Returns

Exponentiation preserving the sign

Implements QwtTransform.

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

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