QwtSplineCurveFitter (3) - Linux Man Pages

NAME

QwtSplineCurveFitter -

A curve fitter using cubic splines.

SYNOPSIS


#include <qwt_curve_fitter.h>

Inherits QwtCurveFitter.

Public Types


enum FitMode { Auto, Spline, ParametricSpline }

Public Member Functions


QwtSplineCurveFitter ()
Constructor.
virtual ~QwtSplineCurveFitter ()
Destructor.
void setFitMode (FitMode)

FitMode fitMode () const

void setSpline (const QwtSpline &)

const QwtSpline & spline () const

QwtSpline & spline ()

void setSplineSize (int size)

int splineSize () const

virtual QPolygonF fitCurve (const QPolygonF &) const

Additional Inherited Members

Detailed Description

A curve fitter using cubic splines.

Member Enumeration Documentation

enum QwtSplineCurveFitter::FitMode

Spline type The default setting is Auto

See Also:

setFitMode(), FitMode()

Enumerator

Auto
Use the default spline algorithm for polygons with increasing x values ( p[i-1] < p[i] ), otherwise use a parametric spline algorithm.
Spline
Use a default spline algorithm.
ParametricSpline
Use a parametric spline algorithm.

Member Function Documentation

QPolygonF QwtSplineCurveFitter::fitCurve (const QPolygonF &points) const [virtual]

Find a curve which has the best fit to a series of data points

Parameters:

points Series of data points

Returns:

Curve points

Implements QwtCurveFitter.

QwtSplineCurveFitter::FitMode QwtSplineCurveFitter::fitMode () const

Returns:

Mode representing a spline algorithm

See Also:

setFitMode()

void QwtSplineCurveFitter::setFitMode (FitModemode)

Select the algorithm used for building the spline

Parameters:

mode Mode representing a spline algorithm

See Also:

fitMode()

void QwtSplineCurveFitter::setSpline (const QwtSpline &spline)

Assign a spline

Parameters:

spline Spline

See Also:

spline()

void QwtSplineCurveFitter::setSplineSize (intsplineSize)

Assign a spline size ( has to be at least 10 points )

Parameters:

splineSize Spline size

See Also:

splineSize()

const QwtSpline & QwtSplineCurveFitter::spline () const

Returns:

Spline

See Also:

setSpline()

QwtSpline & QwtSplineCurveFitter::spline ()

Returns:

Spline

See Also:

setSpline()

int QwtSplineCurveFitter::splineSize () const

Returns:

Spline size

See Also:

setSplineSize()

Author

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