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QwtLog10ScaleEngine(3)         Qwt User's Guide         QwtLog10ScaleEngine(3)


QwtLog10ScaleEngine -


#include <qwt_scale_engine.h> Inherits QwtScaleEngine. Public Member Functions 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 virtual QwtScaleTransformation * transformation () const Protected Member Functions QwtDoubleInterval log10 (const QwtDoubleInterval &) const QwtDoubleInterval pow10 (const QwtDoubleInterval &) const Additional Inherited Members Detailed Description 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 $re n is a natural number including zero. Warning: the step size as well as the margins are measured in decades. Member Function Documentation void QwtLog10ScaleEngine::autoScale (intmaxNumSteps, double &x1, double &x2, double &stepSize) const [virtual] Align and divide an interval Parameters: 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) See also: QwtScaleEngine::setAttribute() Implements QwtScaleEngine. QwtScaleDiv QwtLog10ScaleEngine::divideScale (doublex1, doublex2, intmaxMajSteps, intmaxMinSteps, doublestepSize = 0.0) const [virtual] Calculate a scale division. Parameters: 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. See also: QwtScaleEngine::stepSize(), QwtLog10ScaleEngine::subDivide() Implements 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 Implements QwtScaleEngine. Author Generated automatically by Doxygen for Qwt User's Guide from the source code. Version 5.2.3 Tue Nov 20 2012 QwtLog10ScaleEngine(3)

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