QwtPowerTransform - Man Page
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 override
virtual double invTransform (double value) const override
virtual QwtTransform * copy () const override
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.
Definition at line 125 of file qwt_transform.h.
Constructor & Destructor Documentation
QwtPowerTransform::QwtPowerTransform (double exponent) [explicit]
Constructor
- Parameters
exponent Exponent
Definition at line 121 of file qwt_transform.cpp.
Member Function Documentation
QwtTransform * QwtPowerTransform::copy () const [override], [virtual]
- Returns
Clone of the transformation
Implements QwtTransform.
Definition at line 158 of file qwt_transform.cpp.
double QwtPowerTransform::invTransform (double value) const [override], [virtual]
- Parameters
value Value to be transformed
- Returns
Inverse exponentiation preserving the sign
Implements QwtTransform.
Definition at line 149 of file qwt_transform.cpp.
double QwtPowerTransform::transform (double value) const [override], [virtual]
- Parameters
value Value to be transformed
- Returns
Exponentiation preserving the sign
Implements QwtTransform.
Definition at line 136 of file qwt_transform.cpp.
Author
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