.TH "QwtPlotMultiBarChart" 3 "Sun Jul 18 2021" "Version 6.2.0" "Qwt User's Guide" \" -*- nroff -*- .ad l .nh .SH NAME QwtPlotMultiBarChart \- \fBQwtPlotMultiBarChart\fP displays a series of a samples that consist each of a set of values\&. .SH SYNOPSIS .br .PP .PP \fC#include \fP .PP Inherits \fBQwtPlotAbstractBarChart\fP, and \fBQwtSeriesStore< QwtSetSample >\fP\&. .SS "Public Types" .in +1c .ti -1c .RI "enum \fBChartStyle\fP { \fBGrouped\fP, \fBStacked\fP }" .br .RI "Chart styles\&. " .in -1c .SS "Public Member Functions" .in +1c .ti -1c .RI "\fBQwtPlotMultiBarChart\fP (const QString &\fBtitle\fP=QString())" .br .ti -1c .RI "\fBQwtPlotMultiBarChart\fP (const \fBQwtText\fP &\fBtitle\fP)" .br .ti -1c .RI "virtual \fB~QwtPlotMultiBarChart\fP ()" .br .RI "Destructor\&. " .ti -1c .RI "virtual int \fBrtti\fP () const override" .br .ti -1c .RI "void \fBsetBarTitles\fP (const \fBQList\fP< \fBQwtText\fP > &)" .br .RI "Set the titles for the bars\&. " .ti -1c .RI "\fBQList\fP< \fBQwtText\fP > \fBbarTitles\fP () const" .br .ti -1c .RI "void \fBsetSamples\fP (const \fBQVector\fP< \fBQwtSetSample\fP > &)" .br .ti -1c .RI "void \fBsetSamples\fP (const \fBQVector\fP< \fBQVector\fP< double > > &)" .br .ti -1c .RI "void \fBsetSamples\fP (\fBQwtSeriesData\fP< \fBQwtSetSample\fP > *)" .br .ti -1c .RI "void \fBsetStyle\fP (\fBChartStyle\fP \fBstyle\fP)" .br .ti -1c .RI "\fBChartStyle\fP \fBstyle\fP () const" .br .ti -1c .RI "void \fBsetSymbol\fP (int valueIndex, \fBQwtColumnSymbol\fP *)" .br .RI "Add a symbol to the symbol map\&. " .ti -1c .RI "const \fBQwtColumnSymbol\fP * \fBsymbol\fP (int valueIndex) const" .br .ti -1c .RI "void \fBresetSymbolMap\fP ()" .br .ti -1c .RI "virtual void \fBdrawSeries\fP (QPainter *, const \fBQwtScaleMap\fP &xMap, const \fBQwtScaleMap\fP &yMap, const QRectF &canvasRect, int from, int to) const override" .br .ti -1c .RI "virtual QRectF \fBboundingRect\fP () const override" .br .ti -1c .RI "virtual \fBQList\fP< \fBQwtLegendData\fP > \fBlegendData\fP () const override" .br .ti -1c .RI "virtual \fBQwtGraphic\fP \fBlegendIcon\fP (int index, const QSizeF &) const override" .br .in -1c .SS "Protected Member Functions" .in +1c .ti -1c .RI "\fBQwtColumnSymbol\fP * \fBsymbol\fP (int valueIndex)" .br .ti -1c .RI "virtual \fBQwtColumnSymbol\fP * \fBspecialSymbol\fP (int sampleIndex, int valueIndex) const" .br .RI "Create a symbol for special values\&. " .ti -1c .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" .br .ti -1c .RI "virtual void \fBdrawBar\fP (QPainter *, int sampleIndex, int valueIndex, const \fBQwtColumnRect\fP &) const" .br .ti -1c .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" .br .ti -1c .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" .br .in -1c .SH "Detailed Description" .PP \fBQwtPlotMultiBarChart\fP displays a series of a samples that consist each of a set of values\&. Each value is displayed as a bar, the bars of each set can be organized side by side or accumulated\&. .PP 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\&. .PP Depending on its \fBorientation()\fP the bars are displayed horizontally or vertically\&. The bars cover the interval between the \fBbaseline()\fP and the value\&. .PP In opposite to most other plot items, \fBQwtPlotMultiBarChart\fP returns more than one entry for the legend - one for each symbol\&. .PP \fBSee also\fP .RS 4 \fBQwtPlotBarChart\fP, \fBQwtPlotHistogram\fP \fBQwtPlotSeriesItem::orientation()\fP, \fBQwtPlotAbstractBarChart::baseline()\fP .RE .PP .PP Definition at line 41 of file qwt_plot_multi_barchart\&.h\&. .SH "Member Enumeration Documentation" .PP .SS "enum \fBQwtPlotMultiBarChart::ChartStyle\fP" .PP Chart styles\&. The default setting is \fBQwtPlotMultiBarChart::Grouped\fP\&. .PP \fBSee also\fP .RS 4 \fBsetStyle()\fP, \fBstyle()\fP .RE .PP .PP \fBEnumerator\fP .in +1c .TP \fB\fIGrouped \fP\fP The bars of a set are displayed side by side\&. .TP \fB\fIStacked \fP\fP 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\&. .PP Definition at line 52 of file qwt_plot_multi_barchart\&.h\&. .SH "Constructor & Destructor Documentation" .PP .SS "QwtPlotMultiBarChart::QwtPlotMultiBarChart (const QString & title = \fCQString()\fP)\fC [explicit]\fP" Constructor .PP \fBParameters\fP .RS 4 \fItitle\fP Title of the chart .RE .PP .PP Definition at line 62 of file qwt_plot_multi_barchart\&.cpp\&. .SS "QwtPlotMultiBarChart::QwtPlotMultiBarChart (const \fBQwtText\fP & title)\fC [explicit]\fP" Constructor .PP \fBParameters\fP .RS 4 \fItitle\fP Title of the chart .RE .PP .PP Definition at line 52 of file qwt_plot_multi_barchart\&.cpp\&. .SH "Member Function Documentation" .PP .SS "\fBQList\fP< \fBQwtText\fP > QwtPlotMultiBarChart::barTitles () const" .PP \fBReturns\fP .RS 4 Bar titles .RE .PP \fBSee also\fP .RS 4 \fBsetBarTitles()\fP, \fBlegendData()\fP .RE .PP .PP Definition at line 148 of file qwt_plot_multi_barchart\&.cpp\&. .SS "QRectF QwtPlotMultiBarChart::boundingRect () const\fC [override]\fP, \fC [virtual]\fP" .PP \fBReturns\fP .RS 4 Bounding rectangle of all samples\&. For an empty series the rectangle is invalid\&. .RE .PP .PP Reimplemented from \fBQwtPlotSeriesItem\fP\&. .PP Definition at line 302 of file qwt_plot_multi_barchart\&.cpp\&. .SS "void QwtPlotMultiBarChart::drawBar (QPainter * painter, int sampleIndex, int valueIndex, const \fBQwtColumnRect\fP & rect) const\fC [protected]\fP, \fC [virtual]\fP" Draw a bar .PP \fBParameters\fP .RS 4 \fIpainter\fP Painter .br \fIsampleIndex\fP Index of the sample - might be -1 when the bar is painted for the legend .br \fIvalueIndex\fP Index of a value in a set .br \fIrect\fP Directed target rectangle for the bar .RE .PP \fBSee also\fP .RS 4 \fBdrawSeries()\fP .RE .PP .PP Definition at line 652 of file qwt_plot_multi_barchart\&.cpp\&. .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" Draw a grouped sample .PP \fBParameters\fP .RS 4 \fIpainter\fP Painter .br \fIxMap\fP x map .br \fIyMap\fP y map .br \fIcanvasRect\fP Contents rectangle of the canvas .br \fIindex\fP Index of the sample to be painted .br \fIsampleWidth\fP Bounding width for all bars of the sample .br \fIsample\fP Sample .RE .PP \fBSee also\fP .RS 4 \fBdrawSeries()\fP, \fBsampleWidth()\fP .RE .PP .PP Definition at line 461 of file qwt_plot_multi_barchart\&.cpp\&. .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" Draw a sample .PP \fBParameters\fP .RS 4 \fIpainter\fP Painter .br \fIxMap\fP x map .br \fIyMap\fP y map .br \fIcanvasRect\fP Contents rectangle of the canvas .br \fIboundingInterval\fP Bounding interval of sample values .br \fIindex\fP Index of the sample to be painted .br \fIsample\fP Sample value .RE .PP \fBSee also\fP .RS 4 \fBdrawSeries()\fP .RE .PP .PP Definition at line 415 of file qwt_plot_multi_barchart\&.cpp\&. .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" Draw an interval of the bar chart .PP \fBParameters\fP .RS 4 \fIpainter\fP Painter .br \fIxMap\fP Maps x-values into pixel coordinates\&. .br \fIyMap\fP Maps y-values into pixel coordinates\&. .br \fIcanvasRect\fP Contents rectangle of the canvas .br \fIfrom\fP Index of the first point to be painted .br \fIto\fP Index of the last point to be painted\&. If to < 0 the curve will be painted to its last point\&. .RE .PP \fBSee also\fP .RS 4 drawSymbols() .RE .PP .PP Implements \fBQwtPlotSeriesItem\fP\&. .PP Definition at line 374 of file qwt_plot_multi_barchart\&.cpp\&. .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" Draw a stacked sample .PP \fBParameters\fP .RS 4 \fIpainter\fP Painter .br \fIxMap\fP x map .br \fIyMap\fP y map .br \fIcanvasRect\fP Contents rectangle of the canvas .br \fIindex\fP Index of the sample to be painted .br \fIsampleWidth\fP Width of the bars .br \fIsample\fP Sample .RE .PP \fBSee also\fP .RS 4 \fBdrawSeries()\fP, \fBsampleWidth()\fP .RE .PP .PP Definition at line 541 of file qwt_plot_multi_barchart\&.cpp\&. .SS "\fBQList\fP< \fBQwtLegendData\fP > QwtPlotMultiBarChart::legendData () const\fC [override]\fP, \fC [virtual]\fP" .PP \fBReturns\fP .RS 4 Information to be displayed on the legend .RE .PP 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\&. .PP \fBSee also\fP .RS 4 \fBbarTitles()\fP, \fBlegendIcon()\fP, \fBlegendIconSize()\fP .RE .PP .PP Reimplemented from \fBQwtPlotItem\fP\&. .PP Definition at line 687 of file qwt_plot_multi_barchart\&.cpp\&. .SS "\fBQwtGraphic\fP QwtPlotMultiBarChart::legendIcon (int index, const QSizeF & size) const\fC [override]\fP, \fC [virtual]\fP" .PP \fBReturns\fP .RS 4 Icon for representing a bar on the legend .RE .PP \fBParameters\fP .RS 4 \fIindex\fP Index of the bar .br \fIsize\fP Icon size .RE .PP \fBReturns\fP .RS 4 An icon showing a bar .RE .PP \fBSee also\fP .RS 4 \fBdrawBar()\fP, \fBlegendData()\fP .RE .PP .PP Reimplemented from \fBQwtPlotItem\fP\&. .PP Definition at line 720 of file qwt_plot_multi_barchart\&.cpp\&. .SS "void QwtPlotMultiBarChart::resetSymbolMap ()" Remove all symbols from the symbol map .PP Definition at line 237 of file qwt_plot_multi_barchart\&.cpp\&. .SS "int QwtPlotMultiBarChart::rtti () const\fC [override]\fP, \fC [virtual]\fP" .PP \fBReturns\fP .RS 4 \fBQwtPlotItem::Rtti_PlotBarChart\fP .RE .PP .PP Reimplemented from \fBQwtPlotItem\fP\&. .PP Definition at line 82 of file qwt_plot_multi_barchart\&.cpp\&. .SS "void QwtPlotMultiBarChart::setBarTitles (const \fBQList\fP< \fBQwtText\fP > & titles)" .PP Set the titles for the bars\&. The titles are used for the legend\&. .PP \fBParameters\fP .RS 4 \fItitles\fP Bar titles .RE .PP \fBSee also\fP .RS 4 \fBbarTitles()\fP, \fBlegendData()\fP .RE .PP .PP Definition at line 138 of file qwt_plot_multi_barchart\&.cpp\&. .SS "void QwtPlotMultiBarChart::setSamples (const \fBQVector\fP< \fBQVector\fP< double > > & samples)" Initialize data with an array of samples\&. .PP \fBParameters\fP .RS 4 \fIsamples\fP Vector of points .RE .PP .PP Definition at line 101 of file qwt_plot_multi_barchart\&.cpp\&. .SS "void QwtPlotMultiBarChart::setSamples (const \fBQVector\fP< \fBQwtSetSample\fP > & samples)" Initialize data with an array of samples\&. .PP \fBParameters\fP .RS 4 \fIsamples\fP Vector of points .RE .PP .PP Definition at line 91 of file qwt_plot_multi_barchart\&.cpp\&. .SS "void QwtPlotMultiBarChart::setSamples (\fBQwtSeriesData\fP< \fBQwtSetSample\fP > * data)" Assign a series of samples .PP \fBsetSamples()\fP is just a wrapper for \fBsetData()\fP without any additional value - beside that it is easier to find for the developer\&. .PP \fBParameters\fP .RS 4 \fIdata\fP Data .RE .PP \fBWarning\fP .RS 4 The item takes ownership of the data object, deleting it when its not used anymore\&. .RE .PP .PP Definition at line 123 of file qwt_plot_multi_barchart\&.cpp\&. .SS "void QwtPlotMultiBarChart::setStyle (\fBChartStyle\fP style)" Set the style of the chart .PP \fBParameters\fP .RS 4 \fIstyle\fP Chart style .RE .PP \fBSee also\fP .RS 4 \fBstyle()\fP .RE .PP .PP Definition at line 278 of file qwt_plot_multi_barchart\&.cpp\&. .SS "void QwtPlotMultiBarChart::setSymbol (int valueIndex, \fBQwtColumnSymbol\fP * symbol)" .PP 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\&. .PP \fBParameters\fP .RS 4 \fIvalueIndex\fP Index of a value in a set .br \fIsymbol\fP Symbol used for drawing a bar .RE .PP \fBSee also\fP .RS 4 \fBsymbol()\fP, \fBresetSymbolMap()\fP, \fBspecialSymbol()\fP .RE .PP .PP Definition at line 164 of file qwt_plot_multi_barchart\&.cpp\&. .SS "\fBQwtColumnSymbol\fP * QwtPlotMultiBarChart::specialSymbol (int sampleIndex, int valueIndex) const\fC [protected]\fP, \fC [virtual]\fP" .PP 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\&. .PP 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\&. .PP 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\&. .PP \fBParameters\fP .RS 4 \fIsampleIndex\fP Index of the sample .br \fIvalueIndex\fP Index of the value in the set .RE .PP \fBReturns\fP .RS 4 NULL, meaning that the value is not special .RE .PP .PP Definition at line 263 of file qwt_plot_multi_barchart\&.cpp\&. .SS "\fBQwtPlotMultiBarChart::ChartStyle\fP QwtPlotMultiBarChart::style () const" .PP \fBReturns\fP .RS 4 Style of the chart .RE .PP \fBSee also\fP .RS 4 \fBsetStyle()\fP .RE .PP .PP Definition at line 293 of file qwt_plot_multi_barchart\&.cpp\&. .SS "\fBQwtColumnSymbol\fP * QwtPlotMultiBarChart::symbol (int valueIndex)\fC [protected]\fP" Find a symbol in the symbol map .PP \fBParameters\fP .RS 4 \fIvalueIndex\fP Index of a value in a set .RE .PP \fBReturns\fP .RS 4 The symbol, that had been set by \fBsetSymbol()\fP or NULL\&. .RE .PP \fBSee also\fP .RS 4 \fBsetSymbol()\fP, \fBspecialSymbol()\fP, \fBdrawBar()\fP .RE .PP .PP Definition at line 226 of file qwt_plot_multi_barchart\&.cpp\&. .SS "const \fBQwtColumnSymbol\fP * QwtPlotMultiBarChart::symbol (int valueIndex) const" Find a symbol in the symbol map .PP \fBParameters\fP .RS 4 \fIvalueIndex\fP Index of a value in a set .RE .PP \fBReturns\fP .RS 4 The symbol, that had been set by \fBsetSymbol()\fP or NULL\&. .RE .PP \fBSee also\fP .RS 4 \fBsetSymbol()\fP, \fBspecialSymbol()\fP, \fBdrawBar()\fP .RE .PP .PP Definition at line 210 of file qwt_plot_multi_barchart\&.cpp\&. .SH "Author" .PP Generated automatically by Doxygen for Qwt User's Guide from the source code\&.