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Eneboo - Documentación para desarrolladores
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A scale engine for logarithmic (base 10) scales. Más...
#include <qwt_scale_engine.h>
Métodos públicos | |
| virtual void | autoScale (int maxSteps, double &x1, double &x2, double &stepSize) const |
| virtual QwtScaleDiv | divideScale (double x1, double x2, int numMajorSteps, int numMinorSteps, double stepSize=0.0) const |
| Calculate a scale division. | |
| virtual QwtScaleTransformation * | transformation () const |
Métodos protegidos | |
| QwtDoubleInterval | log10 (const QwtDoubleInterval &) const |
| QwtDoubleInterval | pow10 (const QwtDoubleInterval &) const |
A scale engine for logarithmic (base 10) scales.
The step size is measured in *decades* and the major step size will be adjusted to fit the pattern
, where n is a natural number including zero.
| void QwtLog10ScaleEngine::autoScale | ( | int | maxNumSteps, |
| double & | x1, | ||
| double & | x2, | ||
| double & | stepSize | ||
| ) | const [virtual] |
Align and divide an interval
| maxNumSteps | Max. number of steps |
| x1 | First limit of the interval (In/Out) |
| x2 | Second limit of the interval (In/Out) |
| stepSize | Step size (Out) |
Implementa QwtScaleEngine.
| QwtScaleDiv QwtLog10ScaleEngine::divideScale | ( | double | x1, |
| double | x2, | ||
| int | maxMajSteps, | ||
| int | maxMinSteps, | ||
| double | stepSize = 0.0 |
||
| ) | const [virtual] |
Calculate a scale division.
| x1 | First interval limit |
| x2 | Second interval limit |
| maxMajSteps | Maximum for the number of major steps |
| maxMinSteps | Maximum number of minor steps |
| stepSize | Step size. If stepSize == 0, the scaleEngine calculates one. |
Implementa QwtScaleEngine.
| QwtDoubleInterval QwtLog10ScaleEngine::log10 | ( | const QwtDoubleInterval & | interval | ) | const [protected] |
Return the interval [log10(interval.minValue(), log10(interval.maxValue]
| QwtDoubleInterval QwtLog10ScaleEngine::pow10 | ( | const QwtDoubleInterval & | interval | ) | const [protected] |
Return the interval [pow10(interval.minValue(), pow10(interval.maxValue]
| QwtScaleTransformation * QwtLog10ScaleEngine::transformation | ( | ) | const [virtual] |
Return a transformation, for logarithmic (base 10) scales
Implementa QwtScaleEngine.
1.7.4