QwtPowerTransform3
A transformation using pow()
Usage
#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.
Releases
5 releases since Debian 9 (Stretch); the text changed 1 time.