A transformation using pow() More...
#include <qwt_transform.h>
Inheritance diagram for QwtPowerTransform:
Public Member Functions | |
| virtual QwtTransform * | copy () const |
| virtual double | invTransform (double value) const |
| QwtPowerTransform (double exponent) | |
| virtual double | transform (double value) const |
| virtual | ~QwtPowerTransform () |
| Destructor. | |
Private Attributes | |
| const double | d_exponent |
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] |
| QwtPowerTransform::~QwtPowerTransform | ( | ) | [virtual] |
Destructor.
Definition at line 132 of file qwt_transform.cpp.
Member Function Documentation
| QwtTransform * QwtPowerTransform::copy | ( | ) | const [virtual] |
- Returns:
- Clone of the transformation
Implements QwtTransform.
Definition at line 162 of file qwt_transform.cpp.
| double QwtPowerTransform::invTransform | ( | double | value | ) | const [virtual] |
- Parameters:
-
value Value to be transformed
- Returns:
- Inverse exponentiation preserving the sign
Implements QwtTransform.
Definition at line 153 of file qwt_transform.cpp.
| double QwtPowerTransform::transform | ( | double | value | ) | const [virtual] |
- Parameters:
-
value Value to be transformed
- Returns:
- Exponentiation preserving the sign
Implements QwtTransform.
Definition at line 140 of file qwt_transform.cpp.
Member Data Documentation
const double QwtPowerTransform::d_exponent [private] |
Definition at line 137 of file qwt_transform.h.
The documentation for this class was generated from the following files: