586 lines
15 KiB
Groff
586 lines
15 KiB
Groff
.TH "QwtPlotMultiBarChart" 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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QwtPlotMultiBarChart \- \fBQwtPlotMultiBarChart\fP displays a series of a samples that consist each of a set of values\&.
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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_plot_multi_barchart\&.h>\fP
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.PP
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Inherits \fBQwtPlotAbstractBarChart\fP, and \fBQwtSeriesStore< QwtSetSample >\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 \fBChartStyle\fP { \fBGrouped\fP, \fBStacked\fP }"
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.br
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.RI "Chart styles\&. "
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.in -1c
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.SS "Public Member Functions"
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.RI "\fBQwtPlotMultiBarChart\fP (const QString &\fBtitle\fP=QString())"
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.RI "\fBQwtPlotMultiBarChart\fP (const \fBQwtText\fP &\fBtitle\fP)"
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.br
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.RI "virtual \fB~QwtPlotMultiBarChart\fP ()"
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.RI "Destructor\&. "
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.RI "virtual int \fBrtti\fP () const override"
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.RI "void \fBsetBarTitles\fP (const \fBQList\fP< \fBQwtText\fP > &)"
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.RI "Set the titles for the bars\&. "
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.RI "\fBQList\fP< \fBQwtText\fP > \fBbarTitles\fP () const"
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.RI "void \fBsetSamples\fP (const \fBQVector\fP< \fBQwtSetSample\fP > &)"
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.br
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.ti -1c
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.RI "void \fBsetSamples\fP (const \fBQVector\fP< \fBQVector\fP< double > > &)"
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.br
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.ti -1c
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.RI "void \fBsetSamples\fP (\fBQwtSeriesData\fP< \fBQwtSetSample\fP > *)"
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.RI "void \fBsetStyle\fP (\fBChartStyle\fP \fBstyle\fP)"
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.RI "\fBChartStyle\fP \fBstyle\fP () const"
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.RI "void \fBsetSymbol\fP (int valueIndex, \fBQwtColumnSymbol\fP *)"
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.br
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.RI "Add a symbol to the symbol map\&. "
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.RI "const \fBQwtColumnSymbol\fP * \fBsymbol\fP (int valueIndex) const"
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.ti -1c
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.RI "void \fBresetSymbolMap\fP ()"
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.RI "virtual void \fBdrawSeries\fP (QPainter *, const \fBQwtScaleMap\fP &xMap, const \fBQwtScaleMap\fP &yMap, const QRectF &canvasRect, int from, int to) const override"
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.RI "virtual QRectF \fBboundingRect\fP () const override"
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.RI "virtual \fBQList\fP< \fBQwtLegendData\fP > \fBlegendData\fP () 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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.SS "Protected Member Functions"
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.RI "\fBQwtColumnSymbol\fP * \fBsymbol\fP (int valueIndex)"
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.RI "virtual \fBQwtColumnSymbol\fP * \fBspecialSymbol\fP (int sampleIndex, int valueIndex) const"
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.br
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.RI "Create a symbol for special values\&. "
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.ti -1c
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.RI "virtual void \fBdrawSample\fP (QPainter *, const \fBQwtScaleMap\fP &xMap, const \fBQwtScaleMap\fP &yMap, const QRectF &canvasRect, const \fBQwtInterval\fP &boundingInterval, int index, const \fBQwtSetSample\fP &) const"
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.br
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.RI "virtual void \fBdrawBar\fP (QPainter *, int sampleIndex, int valueIndex, const \fBQwtColumnRect\fP &) const"
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.br
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.RI "void \fBdrawStackedBars\fP (QPainter *, const \fBQwtScaleMap\fP &xMap, const \fBQwtScaleMap\fP &yMap, const QRectF &canvasRect, int index, double \fBsampleWidth\fP, const \fBQwtSetSample\fP &) const"
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.br
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.ti -1c
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.RI "void \fBdrawGroupedBars\fP (QPainter *, const \fBQwtScaleMap\fP &xMap, const \fBQwtScaleMap\fP &yMap, const QRectF &canvasRect, int index, double \fBsampleWidth\fP, const \fBQwtSetSample\fP &) 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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\fBQwtPlotMultiBarChart\fP displays a series of a samples that consist each of a set of values\&.
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Each value is displayed as a bar, the bars of each set can be organized side by side or accumulated\&.
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.PP
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Each bar of a set is rendered by a \fBQwtColumnSymbol\fP, that is set by \fBsetSymbol()\fP\&. The bars of different sets use the same symbols\&. Exceptions are possible by overloading \fBspecialSymbol()\fP or overloading \fBdrawBar()\fP\&.
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.PP
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Depending on its \fBorientation()\fP the bars are displayed horizontally or vertically\&. The bars cover the interval between the \fBbaseline()\fP and the value\&.
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.PP
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In opposite to most other plot items, \fBQwtPlotMultiBarChart\fP returns more than one entry for the legend - one for each symbol\&.
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.PP
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\fBSee also\fP
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.RS 4
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\fBQwtPlotBarChart\fP, \fBQwtPlotHistogram\fP \fBQwtPlotSeriesItem::orientation()\fP, \fBQwtPlotAbstractBarChart::baseline()\fP
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.RE
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.PP
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.PP
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Definition at line 41 of file qwt_plot_multi_barchart\&.h\&.
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.SH "Member Enumeration Documentation"
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.PP
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.SS "enum \fBQwtPlotMultiBarChart::ChartStyle\fP"
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.PP
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Chart styles\&. The default setting is \fBQwtPlotMultiBarChart::Grouped\fP\&.
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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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\fBEnumerator\fP
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.in +1c
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.TP
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\fB\fIGrouped \fP\fP
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The bars of a set are displayed side by side\&.
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.TP
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\fB\fIStacked \fP\fP
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The bars are displayed on top of each other accumulating to a single bar\&. All values of a set need to have the same sign\&.
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.PP
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Definition at line 52 of file qwt_plot_multi_barchart\&.h\&.
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.SH "Constructor & Destructor Documentation"
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.PP
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.SS "QwtPlotMultiBarChart::QwtPlotMultiBarChart (const QString & title = \fCQString()\fP)\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 chart
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.RE
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.PP
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Definition at line 62 of file qwt_plot_multi_barchart\&.cpp\&.
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.SS "QwtPlotMultiBarChart::QwtPlotMultiBarChart (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 chart
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.RE
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.PP
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.PP
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Definition at line 52 of file qwt_plot_multi_barchart\&.cpp\&.
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.SH "Member Function Documentation"
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.PP
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.SS "\fBQList\fP< \fBQwtText\fP > QwtPlotMultiBarChart::barTitles () const"
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.PP
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\fBReturns\fP
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.RS 4
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Bar titles
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.RE
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\fBSee also\fP
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.RS 4
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\fBsetBarTitles()\fP, \fBlegendData()\fP
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.RE
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.PP
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.PP
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Definition at line 148 of file qwt_plot_multi_barchart\&.cpp\&.
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.SS "QRectF QwtPlotMultiBarChart::boundingRect () 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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Bounding rectangle of all samples\&. For an empty series the rectangle is invalid\&.
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.RE
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Reimplemented from \fBQwtPlotSeriesItem\fP\&.
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.PP
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Definition at line 302 of file qwt_plot_multi_barchart\&.cpp\&.
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.SS "void QwtPlotMultiBarChart::drawBar (QPainter * painter, int sampleIndex, int valueIndex, const \fBQwtColumnRect\fP & rect) const\fC [protected]\fP, \fC [virtual]\fP"
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Draw a bar
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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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\fIsampleIndex\fP Index of the sample - might be -1 when the bar is painted for the legend
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\fIvalueIndex\fP Index of a value in a set
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\fIrect\fP Directed target rectangle for the bar
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.RE
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\fBSee also\fP
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.RS 4
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\fBdrawSeries()\fP
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.RE
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Definition at line 652 of file qwt_plot_multi_barchart\&.cpp\&.
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.SS "void QwtPlotMultiBarChart::drawGroupedBars (QPainter * painter, const \fBQwtScaleMap\fP & xMap, const \fBQwtScaleMap\fP & yMap, const QRectF & canvasRect, int index, double sampleWidth, const \fBQwtSetSample\fP & sample) const\fC [protected]\fP"
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Draw a grouped sample
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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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\fIxMap\fP x map
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\fIyMap\fP y map
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\fIcanvasRect\fP Contents rectangle of the canvas
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\fIindex\fP Index of the sample to be painted
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\fIsampleWidth\fP Bounding width for all bars of the sample
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\fIsample\fP Sample
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.RE
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\fBSee also\fP
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.RS 4
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\fBdrawSeries()\fP, \fBsampleWidth()\fP
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.RE
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Definition at line 461 of file qwt_plot_multi_barchart\&.cpp\&.
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.SS "void QwtPlotMultiBarChart::drawSample (QPainter * painter, const \fBQwtScaleMap\fP & xMap, const \fBQwtScaleMap\fP & yMap, const QRectF & canvasRect, const \fBQwtInterval\fP & boundingInterval, int index, const \fBQwtSetSample\fP & sample) const\fC [protected]\fP, \fC [virtual]\fP"
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Draw a sample
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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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\fIxMap\fP x map
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\fIyMap\fP y map
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\fIcanvasRect\fP Contents rectangle of the canvas
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\fIboundingInterval\fP Bounding interval of sample values
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\fIindex\fP Index of the sample to be painted
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\fIsample\fP Sample value
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.RE
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\fBSee also\fP
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.RS 4
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\fBdrawSeries()\fP
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.RE
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Definition at line 415 of file qwt_plot_multi_barchart\&.cpp\&.
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.SS "void QwtPlotMultiBarChart::drawSeries (QPainter * painter, const \fBQwtScaleMap\fP & xMap, const \fBQwtScaleMap\fP & yMap, const QRectF & canvasRect, int from, int to) const\fC [override]\fP, \fC [virtual]\fP"
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Draw an interval of the bar chart
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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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\fIxMap\fP Maps x-values into pixel coordinates\&.
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\fIyMap\fP Maps y-values into pixel coordinates\&.
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\fIcanvasRect\fP Contents rectangle of the canvas
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\fIfrom\fP Index of the first point to be painted
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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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\fBSee also\fP
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.RS 4
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drawSymbols()
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.RE
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Implements \fBQwtPlotSeriesItem\fP\&.
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Definition at line 374 of file qwt_plot_multi_barchart\&.cpp\&.
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.SS "void QwtPlotMultiBarChart::drawStackedBars (QPainter * painter, const \fBQwtScaleMap\fP & xMap, const \fBQwtScaleMap\fP & yMap, const QRectF & canvasRect, int index, double sampleWidth, const \fBQwtSetSample\fP & sample) const\fC [protected]\fP"
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Draw a stacked sample
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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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\fIxMap\fP x map
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\fIyMap\fP y map
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\fIcanvasRect\fP Contents rectangle of the canvas
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\fIindex\fP Index of the sample to be painted
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\fIsampleWidth\fP Width of the bars
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\fIsample\fP Sample
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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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\fBdrawSeries()\fP, \fBsampleWidth()\fP
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.RE
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.PP
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Definition at line 541 of file qwt_plot_multi_barchart\&.cpp\&.
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.SS "\fBQList\fP< \fBQwtLegendData\fP > QwtPlotMultiBarChart::legendData () 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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Information to be displayed on the legend
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.RE
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The chart is represented by a list of entries - one for each bar title\&. Each element contains a bar title and an icon showing its corresponding bar\&.
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.PP
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\fBSee also\fP
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.RS 4
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\fBbarTitles()\fP, \fBlegendIcon()\fP, \fBlegendIconSize()\fP
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.RE
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Reimplemented from \fBQwtPlotItem\fP\&.
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.PP
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Definition at line 687 of file qwt_plot_multi_barchart\&.cpp\&.
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.SS "\fBQwtGraphic\fP QwtPlotMultiBarChart::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 for representing a bar 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 bar
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\fIsize\fP Icon size
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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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An icon showing a bar
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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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\fBdrawBar()\fP, \fBlegendData()\fP
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.RE
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.PP
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Reimplemented from \fBQwtPlotItem\fP\&.
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Definition at line 720 of file qwt_plot_multi_barchart\&.cpp\&.
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.SS "void QwtPlotMultiBarChart::resetSymbolMap ()"
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Remove all symbols from the symbol map
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.PP
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Definition at line 237 of file qwt_plot_multi_barchart\&.cpp\&.
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.SS "int QwtPlotMultiBarChart::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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\fBQwtPlotItem::Rtti_PlotBarChart\fP
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.RE
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.PP
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.PP
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Reimplemented from \fBQwtPlotItem\fP\&.
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.PP
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Definition at line 82 of file qwt_plot_multi_barchart\&.cpp\&.
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.SS "void QwtPlotMultiBarChart::setBarTitles (const \fBQList\fP< \fBQwtText\fP > & titles)"
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.PP
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Set the titles for the bars\&. The titles are used for the legend\&.
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.PP
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\fBParameters\fP
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.RS 4
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\fItitles\fP Bar titles
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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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\fBbarTitles()\fP, \fBlegendData()\fP
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.RE
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.PP
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.PP
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Definition at line 138 of file qwt_plot_multi_barchart\&.cpp\&.
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.SS "void QwtPlotMultiBarChart::setSamples (const \fBQVector\fP< \fBQVector\fP< double > > & samples)"
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Initialize data with an array of samples\&.
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.PP
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\fBParameters\fP
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.RS 4
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\fIsamples\fP Vector of points
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.RE
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.PP
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Definition at line 101 of file qwt_plot_multi_barchart\&.cpp\&.
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.SS "void QwtPlotMultiBarChart::setSamples (const \fBQVector\fP< \fBQwtSetSample\fP > & samples)"
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Initialize data with an array of samples\&.
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.PP
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\fBParameters\fP
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.RS 4
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\fIsamples\fP Vector of points
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.RE
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.PP
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.PP
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Definition at line 91 of file qwt_plot_multi_barchart\&.cpp\&.
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.SS "void QwtPlotMultiBarChart::setSamples (\fBQwtSeriesData\fP< \fBQwtSetSample\fP > * data)"
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Assign a series of samples
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.PP
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\fBsetSamples()\fP is just a wrapper for \fBsetData()\fP without any additional value - beside that it is easier to find for the developer\&.
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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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\fBWarning\fP
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.RS 4
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The item takes ownership of the data object, deleting it when its not used anymore\&.
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.RE
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.PP
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.PP
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Definition at line 123 of file qwt_plot_multi_barchart\&.cpp\&.
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.SS "void QwtPlotMultiBarChart::setStyle (\fBChartStyle\fP style)"
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Set the style of the chart
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.PP
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\fBParameters\fP
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.RS 4
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\fIstyle\fP Chart 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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\fBstyle()\fP
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.RE
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.PP
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.PP
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Definition at line 278 of file qwt_plot_multi_barchart\&.cpp\&.
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.SS "void QwtPlotMultiBarChart::setSymbol (int valueIndex, \fBQwtColumnSymbol\fP * symbol)"
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.PP
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Add a symbol to the symbol map\&. Assign a default symbol for drawing the bar representing all values with the same index in a set\&.
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.PP
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\fBParameters\fP
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.RS 4
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\fIvalueIndex\fP Index of a value in a set
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.br
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\fIsymbol\fP Symbol used for drawing a bar
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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, \fBresetSymbolMap()\fP, \fBspecialSymbol()\fP
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.RE
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.PP
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.PP
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Definition at line 164 of file qwt_plot_multi_barchart\&.cpp\&.
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.SS "\fBQwtColumnSymbol\fP * QwtPlotMultiBarChart::specialSymbol (int sampleIndex, int valueIndex) const\fC [protected]\fP, \fC [virtual]\fP"
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.PP
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Create a symbol for special values\&. Usually the symbols for displaying a bar are set by setSymbols() and common for all sets\&. By overloading \fBspecialSymbol()\fP it is possible to create a temporary \fBsymbol()\fP for displaying a special value\&.
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.PP
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The symbol has to be created by new each time \fBspecialSymbol()\fP is called\&. As soon as the symbol is painted this symbol gets deleted\&.
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.PP
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When no symbol ( NULL ) is returned, the value will be displayed with the standard symbol that is used for all symbols with the same valueIndex\&.
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.PP
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\fBParameters\fP
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.RS 4
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\fIsampleIndex\fP Index of the sample
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.br
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\fIvalueIndex\fP Index of the value in the set
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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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NULL, meaning that the value is not special
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.RE
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.PP
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.PP
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Definition at line 263 of file qwt_plot_multi_barchart\&.cpp\&.
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.SS "\fBQwtPlotMultiBarChart::ChartStyle\fP QwtPlotMultiBarChart::style () const"
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.PP
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\fBReturns\fP
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.RS 4
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Style of the chart
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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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\fBsetStyle()\fP
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.RE
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.PP
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.PP
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Definition at line 293 of file qwt_plot_multi_barchart\&.cpp\&.
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.SS "\fBQwtColumnSymbol\fP * QwtPlotMultiBarChart::symbol (int valueIndex)\fC [protected]\fP"
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Find a symbol in the symbol map
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.PP
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\fBParameters\fP
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.RS 4
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\fIvalueIndex\fP Index of a value in a set
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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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The symbol, that had been set by \fBsetSymbol()\fP or NULL\&.
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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, \fBspecialSymbol()\fP, \fBdrawBar()\fP
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.RE
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.PP
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.PP
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Definition at line 226 of file qwt_plot_multi_barchart\&.cpp\&.
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.SS "const \fBQwtColumnSymbol\fP * QwtPlotMultiBarChart::symbol (int valueIndex) const"
|
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Find a symbol in the symbol map
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.PP
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\fBParameters\fP
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.RS 4
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\fIvalueIndex\fP Index of a value in a set
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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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The symbol, that had been set by \fBsetSymbol()\fP or NULL\&.
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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, \fBspecialSymbol()\fP, \fBdrawBar()\fP
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.RE
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.PP
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.PP
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Definition at line 210 of file qwt_plot_multi_barchart\&.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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