Man page - qwtpowertransform(3)

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Manual

QwtPowerTransform

NAME
SYNOPSIS
Public Member Functions
Detailed Description
Constructor & Destructor Documentation
QwtPowerTransform::QwtPowerTransform (double exponent)
Member Function Documentation
QwtTransform * QwtPowerTransform::copy () const [virtual]
double QwtPowerTransform::invTransform (double value) const [virtual]
double QwtPowerTransform::transform (double value) const [virtual]
Author

NAME

QwtPowerTransform - A transformation using pow()

SYNOPSIS

#include <qwt_transform.h>

Inherits QwtTransform .

Public Member Functions

QwtPowerTransform (double exponent)
virtual ˜QwtPowerTransform ()
Destructor.
virtual double transform (double value) const
virtual double invTransform (double value) const
virtual QwtTransform * copy () const

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 (double exponent)

Constructor

Parameters:

exponent Exponent

Member Function Documentation

QwtTransform * QwtPowerTransform::copy () const [virtual]

Returns:

Clone of the transformation

Implements QwtTransform .

double QwtPowerTransform::invTransform (double value) const [virtual]

Parameters:

value Value to be transformed

Returns:

Inverse exponentiation preserving the sign

Implements QwtTransform .

double QwtPowerTransform::transform (double value) const [virtual]

Parameters:

value Value to be transformed

Returns:

Exponentiation preserving the sign

Implements QwtTransform .

Author

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