table of contents
conflicting packages
| QwtLog10ScaleEngine(3) | Qwt User's Guide | QwtLog10ScaleEngine(3) |
NAME¶
QwtLog10ScaleEngine -SYNOPSIS¶
#include <qwt_scale_engine.h> Inherits QwtScaleEngine.Public Member Functions¶
virtual void autoScale (int maxSteps, double &x1, double &x2, double &stepSize) const
Protected Member Functions¶
QwtDoubleInterval log10 (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¶
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