05-20-2010
Quote:
Originally Posted by
pludi
but always presents a virtual wired AMD PCNet III adapter.
It also supports Intel PRO/1000 T/MT and AMD PCnet PCI II.
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LEARN ABOUT DEBIAN
qwtweedingcurvefitter
QwtWeedingCurveFitter(3) Qwt User's Guide QwtWeedingCurveFitter(3)
NAME
QwtWeedingCurveFitter -
A curve fitter implementing Douglas and Peucker algorithm.
SYNOPSIS
#include <qwt_curve_fitter.h>
Inherits QwtCurveFitter.
Public Member Functions
QwtWeedingCurveFitter (double tolerance=1.0)
virtual ~QwtWeedingCurveFitter ()
void setTolerance (double)
double tolerance () const
virtual QPolygonF fitCurve (const QPolygonF &) const
Detailed Description
A curve fitter implementing Douglas and Peucker algorithm.
The purpose of the Douglas and Peucker algorithm is that given a 'curve' composed of line segments to find a curve not too dissimilar but
that has fewer points. The algorithm defines 'too dissimilar' based on the maximum distance (tolerance) between the original curve and the
smoothed curve.
The smoothed curve consists of a subset of the points that defined the original curve.
In opposite to QwtSplineCurveFitter the Douglas and Peucker algorithm reduces the number of points. By adjusting the tolerance parameter
according to the axis scales QwtSplineCurveFitter can be used to implement different level of details to speed up painting of curves of
many points.
Constructor & Destructor Documentation
QwtWeedingCurveFitter::QwtWeedingCurveFitter (doubletolerance = 1.0) Constructor
Parameters:
tolerance Tolerance
See also:
setTolerance(), tolerance()
QwtWeedingCurveFitter::~QwtWeedingCurveFitter () [virtual]
Destructor.
Member Function Documentation
QPolygonF QwtWeedingCurveFitter::fitCurve (const QPolygonF &points) const [virtual] Parameters:
points Series of data points
Returns:
Curve points
Implements QwtCurveFitter.
void QwtWeedingCurveFitter::setTolerance (doubletolerance) Assign the tolerance
The tolerance is the maximum distance, that is accaptable between the original curve and the smoothed curve.
Increasing the tolerance will reduce the number of the resulting points.
Parameters:
tolerance Tolerance
See also:
tolerance()
double QwtWeedingCurveFitter::tolerance () const Returns:
Tolerance
See also:
setTolerance()
Author
Generated automatically by Doxygen for Qwt User's Guide from the source code.
Version 6.0.0 Fri Apr 15 2011 QwtWeedingCurveFitter(3)