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.TH "QwtCurveFitter" 3 "Sun Jul 18 2021" "Version 6.2.0" "Qwt User's Guide" \" -*- nroff -*-
.ad l
.nh
.SH NAME
QwtCurveFitter \- Abstract base class for a curve fitter\&.
.SH SYNOPSIS
.br
.PP
.PP
\fC#include <qwt_curve_fitter\&.h>\fP
.PP
Inherited by \fBQwtPolarFitter\fP, \fBQwtSplineCurveFitter\fP, and \fBQwtWeedingCurveFitter\fP\&.
.SS "Public Types"
.in +1c
.ti -1c
.RI "enum \fBMode\fP { \fBPolygon\fP, \fBPath\fP }"
.br
.RI "Preferred mode of the fitting algorithm\&. "
.in -1c
.SS "Public Member Functions"
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.ti -1c
.RI "virtual \fB~QwtCurveFitter\fP ()"
.br
.RI "Destructor\&. "
.ti -1c
.RI "\fBMode\fP \fBmode\fP () const"
.br
.ti -1c
.RI "virtual QPolygonF \fBfitCurve\fP (const QPolygonF &polygon) const =0"
.br
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.RI "virtual QPainterPath \fBfitCurvePath\fP (const QPolygonF &polygon) const =0"
.br
.in -1c
.SS "Protected Member Functions"
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.RI "\fBQwtCurveFitter\fP (\fBMode\fP \fBmode\fP)"
.br
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.SH "Detailed Description"
.PP
Abstract base class for a curve fitter\&.
.PP
Definition at line 21 of file qwt_curve_fitter\&.h\&.
.SH "Member Enumeration Documentation"
.PP
.SS "enum \fBQwtCurveFitter::Mode\fP"
.PP
Preferred mode of the fitting algorithm\&. Even if a QPainterPath can always be created from a QPolygonF the overhead of the conversion can be avoided by indicating the preference of the implementation to the application code\&.
.PP
\fBEnumerator\fP
.in +1c
.TP
\fB\fIPolygon \fP\fP
The fitting algorithm creates a polygon - the implementation of \fBfitCurvePath()\fP simply wraps the polygon into a path\&.
.PP
\fBSee also\fP
.RS 4
\fBQwtWeedingCurveFitter\fP
.RE
.PP
.TP
\fB\fIPath \fP\fP
The fitting algorithm creates a painter path - the implementation of \fBfitCurve()\fP extracts a polygon from the path\&.
.PP
\fBSee also\fP
.RS 4
\fBQwtSplineCurveFitter\fP
.RE
.PP
.PP
Definition at line 32 of file qwt_curve_fitter\&.h\&.
.SH "Constructor & Destructor Documentation"
.PP
.SS "QwtCurveFitter::QwtCurveFitter (\fBMode\fP mode)\fC [explicit]\fP, \fC [protected]\fP"
Constructor
.PP
\fBParameters\fP
.RS 4
\fImode\fP Preferred fitting mode
.RE
.PP
.PP
Definition at line 16 of file qwt_curve_fitter\&.cpp\&.
.SH "Member Function Documentation"
.PP
.SS "virtual QPolygonF QwtCurveFitter::fitCurve (const QPolygonF & polygon) const\fC [pure virtual]\fP"
Find a curve which has the best fit to a series of data points
.PP
\fBParameters\fP
.RS 4
\fIpolygon\fP Series of data points
.RE
.PP
\fBReturns\fP
.RS 4
Curve points
.RE
.PP
\fBSee also\fP
.RS 4
\fBfitCurvePath()\fP
.RE
.PP
.PP
Implemented in \fBQwtWeedingCurveFitter\fP, \fBQwtSplineCurveFitter\fP, and \fBQwtPolarFitter\fP\&.
.SS "virtual QPainterPath QwtCurveFitter::fitCurvePath (const QPolygonF & polygon) const\fC [pure virtual]\fP"
Find a curve path which has the best fit to a series of data points
.PP
\fBParameters\fP
.RS 4
\fIpolygon\fP Series of data points
.RE
.PP
\fBReturns\fP
.RS 4
Curve path
.RE
.PP
\fBSee also\fP
.RS 4
\fBfitCurve()\fP
.RE
.PP
.PP
Implemented in \fBQwtWeedingCurveFitter\fP, \fBQwtSplineCurveFitter\fP, and \fBQwtPolarFitter\fP\&.
.SS "\fBQwtCurveFitter::Mode\fP QwtCurveFitter::mode () const"
.PP
\fBReturns\fP
.RS 4
Preferred fitting mode
.RE
.PP
.PP
Definition at line 27 of file qwt_curve_fitter\&.cpp\&.
.SH "Author"
.PP
Generated automatically by Doxygen for Qwt User's Guide from the source code\&.