644 lines
15 KiB
Groff
644 lines
15 KiB
Groff
.TH "QwtPolarCurve" 3 "Sun Jul 18 2021" "Version 6.2.0" "Qwt User's Guide" \" -*- nroff -*-
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.ad l
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.nh
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.SH NAME
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QwtPolarCurve \- An item, that represents a series of points\&.
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.SH SYNOPSIS
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.br
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.PP
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.PP
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\fC#include <qwt_polar_curve\&.h>\fP
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.PP
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Inherits \fBQwtPolarItem\fP\&.
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.SS "Public Types"
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.in +1c
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.ti -1c
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.RI "enum \fBCurveStyle\fP { \fBNoCurve\fP, \fBLines\fP, \fBUserCurve\fP = 100 }"
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.br
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.ti -1c
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.RI "enum \fBLegendAttribute\fP { \fBLegendShowLine\fP = 0x01, \fBLegendShowSymbol\fP = 0x02 }"
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.br
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.RI "Attributes how to represent the curve on the legend\&. "
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.ti -1c
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.RI "typedef QFlags< \fBLegendAttribute\fP > \fBLegendAttributes\fP"
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.br
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.in -1c
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.SS "Public Member Functions"
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.in +1c
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.ti -1c
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.RI "\fBQwtPolarCurve\fP ()"
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.br
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.RI "Constructor\&. "
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.ti -1c
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.RI "\fBQwtPolarCurve\fP (const \fBQwtText\fP &\fBtitle\fP)"
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.br
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.ti -1c
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.RI "\fBQwtPolarCurve\fP (const QString &\fBtitle\fP)"
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.br
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.ti -1c
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.RI "virtual \fB~QwtPolarCurve\fP ()"
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.br
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.RI "Destructor\&. "
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.ti -1c
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.RI "virtual int \fBrtti\fP () const override"
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.br
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.ti -1c
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.RI "void \fBsetLegendAttribute\fP (\fBLegendAttribute\fP, bool on=true)"
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.br
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.ti -1c
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.RI "bool \fBtestLegendAttribute\fP (\fBLegendAttribute\fP) const"
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.br
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.RI "Test if a legend attribute is enabled\&. "
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.ti -1c
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.RI "void \fBsetData\fP (\fBQwtSeriesData\fP< \fBQwtPointPolar\fP > *\fBdata\fP)"
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.br
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.ti -1c
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.RI "const \fBQwtSeriesData\fP< \fBQwtPointPolar\fP > * \fBdata\fP () const"
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.br
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.ti -1c
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.RI "size_t \fBdataSize\fP () const"
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.br
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.ti -1c
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.RI "\fBQwtPointPolar\fP \fBsample\fP (int i) const"
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.br
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.ti -1c
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.RI "void \fBsetPen\fP (const QPen &)"
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.br
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.RI "Assign a pen\&. "
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.ti -1c
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.RI "const QPen & \fBpen\fP () const"
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.br
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.ti -1c
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.RI "void \fBsetStyle\fP (\fBCurveStyle\fP \fBstyle\fP)"
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.br
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.ti -1c
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.RI "\fBCurveStyle\fP \fBstyle\fP () const"
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.br
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.ti -1c
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.RI "void \fBsetSymbol\fP (\fBQwtSymbol\fP *)"
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.br
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.RI "Assign a symbol\&. "
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.ti -1c
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.RI "const \fBQwtSymbol\fP * \fBsymbol\fP () const"
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.br
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.ti -1c
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.RI "void \fBsetCurveFitter\fP (\fBQwtCurveFitter\fP *)"
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.br
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.RI "Insert a curve fitter\&. "
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.ti -1c
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.RI "\fBQwtCurveFitter\fP * \fBcurveFitter\fP () const"
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.br
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.ti -1c
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.RI "virtual void \fBdraw\fP (QPainter *p, const \fBQwtScaleMap\fP &azimuthMap, const \fBQwtScaleMap\fP &radialMap, const QPointF &pole, double radius, const QRectF &canvasRect) const override"
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.br
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.ti -1c
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.RI "virtual void \fBdraw\fP (QPainter *p, const \fBQwtScaleMap\fP &azimuthMap, const \fBQwtScaleMap\fP &radialMap, const QPointF &pole, int from, int to) const"
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.br
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.RI "Draw an interval of the curve\&. "
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.ti -1c
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.RI "virtual \fBQwtInterval\fP \fBboundingInterval\fP (int scaleId) const override"
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.br
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.ti -1c
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.RI "virtual \fBQwtGraphic\fP \fBlegendIcon\fP (int index, const QSizeF &) const override"
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.br
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.in -1c
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.SS "Protected Member Functions"
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.in +1c
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.ti -1c
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.RI "void \fBinit\fP ()"
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.br
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.RI "Initialize data members\&. "
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.ti -1c
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.RI "virtual void \fBdrawCurve\fP (QPainter *, int \fBstyle\fP, const \fBQwtScaleMap\fP &azimuthMap, const \fBQwtScaleMap\fP &radialMap, const QPointF &pole, int from, int to) const"
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.br
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.ti -1c
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.RI "virtual void \fBdrawSymbols\fP (QPainter *, const \fBQwtSymbol\fP &, const \fBQwtScaleMap\fP &azimuthMap, const \fBQwtScaleMap\fP &radialMap, const QPointF &pole, int from, int to) const"
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.br
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.ti -1c
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.RI "void \fBdrawLines\fP (QPainter *, const \fBQwtScaleMap\fP &azimuthMap, const \fBQwtScaleMap\fP &radialMap, const QPointF &pole, int from, int to) const"
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.br
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.in -1c
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.SH "Detailed Description"
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.PP
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An item, that represents a series of points\&.
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A curve is the representation of a series of points in polar coordinates\&. The points are connected to the curve using the abstract QwtData interface\&.
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.PP
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\fBSee also\fP
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.RS 4
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\fBQwtPolarPlot\fP, \fBQwtSymbol\fP, \fBQwtScaleMap\fP
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.RE
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.PP
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.PP
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Definition at line 30 of file qwt_polar_curve\&.h\&.
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.SH "Member Typedef Documentation"
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.PP
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.SS "typedef QFlags<\fBLegendAttribute\fP > \fBQwtPolarCurve::LegendAttributes\fP"
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An ORed combination of \fBLegendAttribute\fP values\&.
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.PP
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Definition at line 75 of file qwt_polar_curve\&.h\&.
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.SH "Member Enumeration Documentation"
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.PP
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.SS "enum \fBQwtPolarCurve::CurveStyle\fP"
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Curve styles\&.
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.PP
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\fBSee also\fP
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.RS 4
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\fBsetStyle()\fP, \fBstyle()\fP
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.RE
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.PP
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.PP
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\fBEnumerator\fP
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.in +1c
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.TP
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\fB\fINoCurve \fP\fP
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Don't draw a curve\&. Note: This doesn't affect the symbols\&.
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.TP
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\fB\fILines \fP\fP
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Connect the points with straight lines\&. The lines might be interpolated depending on the 'Fitted' attribute\&. Curve fitting can be configured using \fBsetCurveFitter()\fP\&.
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.TP
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\fB\fIUserCurve \fP\fP
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Values > 100 are reserved for user specific curve styles\&.
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.PP
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Definition at line 37 of file qwt_polar_curve\&.h\&.
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.SS "enum \fBQwtPolarCurve::LegendAttribute\fP"
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.PP
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Attributes how to represent the curve on the legend\&. If none of the flags is activated \fBQwtPlotCurve\fP tries to find a color representing the curve and paints a rectangle with it\&. In the default setting all attributes are off\&.
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.PP
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\fBSee also\fP
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.RS 4
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\fBsetLegendAttribute()\fP, \fBtestLegendAttribute()\fP
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.RE
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.PP
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.PP
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\fBEnumerator\fP
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.in +1c
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.TP
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\fB\fILegendShowLine \fP\fP
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If the curveStyle() is not NoCurve a line is painted with the curvePen()\&.
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.TP
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\fB\fILegendShowSymbol \fP\fP
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If the curve has a valid symbol it is painted\&.
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.PP
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Definition at line 63 of file qwt_polar_curve\&.h\&.
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.SH "Constructor & Destructor Documentation"
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.PP
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.SS "QwtPolarCurve::QwtPolarCurve (const \fBQwtText\fP & title)\fC [explicit]\fP"
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Constructor
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.PP
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\fBParameters\fP
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.RS 4
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\fItitle\fP title of the curve
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.RE
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.PP
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.PP
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Definition at line 76 of file qwt_polar_curve\&.cpp\&.
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.SS "QwtPolarCurve::QwtPolarCurve (const QString & title)\fC [explicit]\fP"
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Constructor
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.PP
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\fBParameters\fP
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.RS 4
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\fItitle\fP title of the curve
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.RE
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.PP
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.PP
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Definition at line 86 of file qwt_polar_curve\&.cpp\&.
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.SH "Member Function Documentation"
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.PP
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.SS "\fBQwtInterval\fP QwtPolarCurve::boundingInterval (int scaleId) const\fC [override]\fP, \fC [virtual]\fP"
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Interval, that is necessary to display the item This interval can be useful for operations like clipping or autoscaling
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.PP
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\fBParameters\fP
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.RS 4
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\fIscaleId\fP Scale index
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.RE
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.PP
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\fBReturns\fP
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.RS 4
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bounding interval
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.RE
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.PP
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\fBSee also\fP
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.RS 4
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QwtData::boundingRect()
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.RE
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.PP
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.PP
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Reimplemented from \fBQwtPolarItem\fP\&.
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.PP
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Definition at line 585 of file qwt_polar_curve\&.cpp\&.
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.SS "\fBQwtCurveFitter\fP * QwtPolarCurve::curveFitter () const"
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.PP
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\fBReturns\fP
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.RS 4
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The curve fitter
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.RE
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.PP
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\fBSee also\fP
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.RS 4
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\fBsetCurveFitter()\fP
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.RE
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.PP
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.PP
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Definition at line 261 of file qwt_polar_curve\&.cpp\&.
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.SS "const \fBQwtSeriesData\fP< \fBQwtPointPolar\fP > * QwtPolarCurve::data () const\fC [inline]\fP"
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.PP
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\fBReturns\fP
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.RS 4
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the the curve data
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.RE
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.PP
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.PP
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Definition at line 144 of file qwt_polar_curve\&.h\&.
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.SS "size_t QwtPolarCurve::dataSize () const"
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.PP
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\fBReturns\fP
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.RS 4
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Number of points
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.RE
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.PP
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\fBSee also\fP
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.RS 4
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\fBsetData()\fP
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.RE
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.PP
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.PP
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Definition at line 499 of file qwt_polar_curve\&.cpp\&.
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.SS "void QwtPolarCurve::draw (QPainter * painter, const \fBQwtScaleMap\fP & azimuthMap, const \fBQwtScaleMap\fP & radialMap, const QPointF & pole, double radius, const QRectF & canvasRect) const\fC [override]\fP, \fC [virtual]\fP"
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Draw the curve
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.PP
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\fBParameters\fP
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.RS 4
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\fIpainter\fP Painter
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.br
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\fIazimuthMap\fP Maps azimuth values to values related to 0\&.0, M_2PI
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.br
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\fIradialMap\fP Maps radius values into painter coordinates\&.
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.br
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\fIpole\fP Position of the pole in painter coordinates
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.br
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\fIradius\fP Radius of the complete plot area in painter coordinates
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.br
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\fIcanvasRect\fP Contents rect of the canvas in painter coordinates
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.RE
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.PP
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.PP
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Implements \fBQwtPolarItem\fP\&.
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.PP
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Definition at line 276 of file qwt_polar_curve\&.cpp\&.
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.SS "void QwtPolarCurve::draw (QPainter * painter, const \fBQwtScaleMap\fP & azimuthMap, const \fBQwtScaleMap\fP & radialMap, const QPointF & pole, int from, int to) const\fC [virtual]\fP"
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.PP
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Draw an interval of the curve\&.
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.PP
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\fBParameters\fP
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.RS 4
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\fIpainter\fP Painter
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.br
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\fIazimuthMap\fP Maps azimuth values to values related to 0\&.0, M_2PI
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.br
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\fIradialMap\fP Maps radius values into painter coordinates\&.
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.br
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\fIpole\fP Position of the pole in painter coordinates
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.br
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\fIfrom\fP index of the first point to be painted
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.br
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\fIto\fP index of the last point to be painted\&. If to < 0 the curve will be painted to its last point\&.
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.RE
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.PP
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\fBSee also\fP
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.RS 4
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\fBdrawCurve()\fP, \fBdrawSymbols()\fP,
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.RE
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.PP
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.PP
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Definition at line 299 of file qwt_polar_curve\&.cpp\&.
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.SS "void QwtPolarCurve::drawCurve (QPainter * painter, int style, const \fBQwtScaleMap\fP & azimuthMap, const \fBQwtScaleMap\fP & radialMap, const QPointF & pole, int from, int to) const\fC [protected]\fP, \fC [virtual]\fP"
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Draw the line part (without symbols) of a curve interval\&.
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.PP
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\fBParameters\fP
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.RS 4
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\fIpainter\fP Painter
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.br
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\fIstyle\fP Curve style, see \fBQwtPolarCurve::CurveStyle\fP
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.br
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\fIazimuthMap\fP Maps azimuth values to values related to 0\&.0, M_2PI
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.br
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\fIradialMap\fP Maps radius values into painter coordinates\&.
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.br
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\fIpole\fP Position of the pole in painter coordinates
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.br
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\fIfrom\fP index of the first point to be painted
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.br
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\fIto\fP index of the last point to be painted\&.
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.RE
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.PP
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\fBSee also\fP
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.RS 4
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\fBdraw()\fP, \fBdrawLines()\fP
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.RE
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.PP
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.PP
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Definition at line 341 of file qwt_polar_curve\&.cpp\&.
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.SS "void QwtPolarCurve::drawLines (QPainter * painter, const \fBQwtScaleMap\fP & azimuthMap, const \fBQwtScaleMap\fP & radialMap, const QPointF & pole, int from, int to) const\fC [protected]\fP"
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Draw lines
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.PP
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\fBParameters\fP
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.RS 4
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\fIpainter\fP Painter
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.br
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\fIazimuthMap\fP Maps azimuth values to values related to 0\&.0, M_2PI
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.br
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\fIradialMap\fP Maps radius values into painter coordinates\&.
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.br
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\fIpole\fP Position of the pole in painter coordinates
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.br
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\fIfrom\fP index of the first point to be painted
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.br
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\fIto\fP index of the last point to be painted\&.
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.RE
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.PP
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\fBSee also\fP
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.RS 4
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\fBdraw()\fP, \fBdrawLines()\fP, \fBsetCurveFitter()\fP
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.RE
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.PP
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.PP
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Definition at line 367 of file qwt_polar_curve\&.cpp\&.
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.SS "void QwtPolarCurve::drawSymbols (QPainter * painter, const \fBQwtSymbol\fP & symbol, const \fBQwtScaleMap\fP & azimuthMap, const \fBQwtScaleMap\fP & radialMap, const QPointF & pole, int from, int to) const\fC [protected]\fP, \fC [virtual]\fP"
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Draw symbols
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.PP
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\fBParameters\fP
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.RS 4
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\fIpainter\fP Painter
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.br
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\fIsymbol\fP Curve symbol
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.br
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\fIazimuthMap\fP Maps azimuth values to values related to 0\&.0, M_2PI
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.br
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\fIradialMap\fP Maps radius values into painter coordinates\&.
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.br
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\fIpole\fP Position of the pole in painter coordinates
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.br
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\fIfrom\fP index of the first point to be painted
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.br
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\fIto\fP index of the last point to be painted\&.
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.RE
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.PP
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\fBSee also\fP
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.RS 4
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\fBsetSymbol()\fP, \fBdraw()\fP, \fBdrawCurve()\fP
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.RE
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.PP
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.PP
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Definition at line 459 of file qwt_polar_curve\&.cpp\&.
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.SS "\fBQwtGraphic\fP QwtPolarCurve::legendIcon (int index, const QSizeF & size) const\fC [override]\fP, \fC [virtual]\fP"
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.PP
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\fBReturns\fP
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.RS 4
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Icon representing the curve on the legend
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.RE
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.PP
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\fBParameters\fP
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.RS 4
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\fIindex\fP Index of the legend entry ( ignored as there is only one )
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.br
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\fIsize\fP Icon size
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.RE
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.PP
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\fBSee also\fP
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.RS 4
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\fBQwtPolarItem::setLegendIconSize()\fP, \fBQwtPolarItem::legendData()\fP
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.RE
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.PP
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.PP
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Reimplemented from \fBQwtPolarItem\fP\&.
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.PP
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Definition at line 513 of file qwt_polar_curve\&.cpp\&.
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.SS "const QPen & QwtPolarCurve::pen () const"
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.PP
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\fBReturns\fP
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.RS 4
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Pen used to draw the lines
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.RE
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.PP
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\fBSee also\fP
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.RS 4
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\fBsetPen()\fP
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.RE
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.PP
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.PP
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Definition at line 212 of file qwt_polar_curve\&.cpp\&.
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.SS "int QwtPolarCurve::rtti () const\fC [override]\fP, \fC [virtual]\fP"
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.PP
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\fBReturns\fP
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.RS 4
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\fBQwtPolarCurve::Rtti_PolarCurve\fP
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.RE
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.PP
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.PP
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Reimplemented from \fBQwtPolarItem\fP\&.
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.PP
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Definition at line 113 of file qwt_polar_curve\&.cpp\&.
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.SS "\fBQwtPointPolar\fP QwtPolarCurve::sample (int i) const\fC [inline]\fP"
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.PP
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\fBParameters\fP
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.RS 4
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\fIi\fP index
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.RE
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.PP
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\fBReturns\fP
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.RS 4
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point at position i
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.RE
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.PP
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.PP
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Definition at line 153 of file qwt_polar_curve\&.h\&.
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.SS "void QwtPolarCurve::setCurveFitter (\fBQwtCurveFitter\fP * curveFitter)"
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.PP
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Insert a curve fitter\&.
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.PP
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\fBParameters\fP
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.RS 4
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\fIcurveFitter\fP Curve fitter
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.RE
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.PP
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A curve fitter interpolates the curve points\&. F\&.e \fBQwtPolarFitter\fP adds equidistant points so that the connection gets rounded instead of having straight lines\&. If curveFitter is NULL fitting is disabled\&.
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.PP
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\fBSee also\fP
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.RS 4
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\fBcurveFitter()\fP
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.RE
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.PP
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.PP
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Definition at line 246 of file qwt_polar_curve\&.cpp\&.
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.SS "void QwtPolarCurve::setData (\fBQwtSeriesData\fP< \fBQwtPointPolar\fP > * data)"
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Initialize data with a pointer to \fBQwtSeriesData<QwtPointPolar>\fP\&.
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.PP
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The x-values of the data object represent the azimuth, the y-value represents the radius\&.
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.PP
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\fBParameters\fP
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.RS 4
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\fIdata\fP Data
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.RE
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.PP
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.PP
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Definition at line 225 of file qwt_polar_curve\&.cpp\&.
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.SS "void QwtPolarCurve::setLegendAttribute (\fBLegendAttribute\fP attribute, bool on = \fCtrue\fP)"
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Specify an attribute how to draw the legend identifier
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.PP
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\fBParameters\fP
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.RS 4
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\fIattribute\fP Attribute
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.br
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\fIon\fP On/Off /sa LegendAttribute, \fBtestLegendAttribute()\fP
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.RE
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.PP
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.PP
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Definition at line 125 of file qwt_polar_curve\&.cpp\&.
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.SS "void QwtPolarCurve::setPen (const QPen & pen)"
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.PP
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Assign a pen\&.
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.PP
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\fBParameters\fP
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.RS 4
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\fIpen\fP New pen
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.RE
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.PP
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\fBSee also\fP
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.RS 4
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\fBpen()\fP
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.RE
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.PP
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.PP
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Definition at line 199 of file qwt_polar_curve\&.cpp\&.
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.SS "void QwtPolarCurve::setStyle (\fBCurveStyle\fP style)"
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Set the curve's drawing style
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.PP
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\fBParameters\fP
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.RS 4
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\fIstyle\fP Curve style
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.RE
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.PP
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\fBSee also\fP
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.RS 4
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\fBCurveStyle\fP, \fBstyle()\fP
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.RE
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.PP
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.PP
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Definition at line 152 of file qwt_polar_curve\&.cpp\&.
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.SS "void QwtPolarCurve::setSymbol (\fBQwtSymbol\fP * symbol)"
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.PP
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Assign a symbol\&.
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.PP
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\fBParameters\fP
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.RS 4
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\fIsymbol\fP Symbol
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.RE
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.PP
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\fBSee also\fP
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.RS 4
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\fBsymbol()\fP
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.RE
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.PP
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.PP
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Definition at line 175 of file qwt_polar_curve\&.cpp\&.
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.SS "\fBQwtPolarCurve::CurveStyle\fP QwtPolarCurve::style () const"
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.PP
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\fBReturns\fP
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.RS 4
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Current style
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.RE
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.PP
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\fBSee also\fP
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.RS 4
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\fBCurveStyle\fP, \fBsetStyle()\fP
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.RE
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.PP
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.PP
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Definition at line 165 of file qwt_polar_curve\&.cpp\&.
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.SS "const \fBQwtSymbol\fP * QwtPolarCurve::symbol () const"
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.PP
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\fBReturns\fP
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.RS 4
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The current symbol
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.RE
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.PP
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\fBSee also\fP
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.RS 4
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\fBsetSymbol()\fP
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.RE
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.PP
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.PP
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Definition at line 189 of file qwt_polar_curve\&.cpp\&.
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.SS "bool QwtPolarCurve::testLegendAttribute (\fBLegendAttribute\fP attribute) const"
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.PP
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Test if a legend attribute is enabled\&.
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.PP
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\fBParameters\fP
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.RS 4
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\fIattribute\fP Legend attribute
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.RE
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.PP
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\fBReturns\fP
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.RS 4
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True if attribute is enabled
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.RE
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.PP
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\fBSee also\fP
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.RS 4
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\fBLegendAttribute\fP, \fBsetLegendAttribute()\fP
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.RE
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.PP
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.PP
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Definition at line 141 of file qwt_polar_curve\&.cpp\&.
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.SH "Author"
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.PP
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Generated automatically by Doxygen for Qwt User's Guide from the source code\&.
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