.TH "QwtPlotMultiBarChart" 3 "Mon Dec 28 2020" "Version 6.1.6" "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" .br .ti -1c .RI "void \fBsetBarTitles\fP (const QList< \fBQwtText\fP > &)" .br .RI "Set the titles for the bars\&. " .ti -1c .RI "QList< \fBQwtText\fP > \fBbarTitles\fP () const" .br .ti -1c .RI "void \fBsetSamples\fP (const QVector< \fBQwtSetSample\fP > &)" .br .ti -1c .RI "void \fBsetSamples\fP (const QVector< QVector< 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 *painter, const \fBQwtScaleMap\fP &xMap, const \fBQwtScaleMap\fP &yMap, const QRectF &canvasRect, int from, int to) const" .br .ti -1c .RI "virtual QRectF \fBboundingRect\fP () const" .br .ti -1c .RI "virtual QList< \fBQwtLegendData\fP > \fBlegendData\fP () const" .br .ti -1c .RI "virtual \fBQwtGraphic\fP \fBlegendIcon\fP (int index, const QSizeF &) const" .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 *painter, const \fBQwtScaleMap\fP &xMap, const \fBQwtScaleMap\fP &yMap, const QRectF &canvasRect, const \fBQwtInterval\fP &boundingInterval, int index, const \fBQwtSetSample\fP &\fBsample\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 *painter, const \fBQwtScaleMap\fP &xMap, const \fBQwtScaleMap\fP &yMap, const QRectF &canvasRect, int index, double \fBsampleWidth\fP, const \fBQwtSetSample\fP &\fBsample\fP) const" .br .ti -1c .RI "void \fBdrawGroupedBars\fP (QPainter *painter, const \fBQwtScaleMap\fP &xMap, const \fBQwtScaleMap\fP &yMap, const QRectF &canvasRect, int index, double \fBsampleWidth\fP, const \fBQwtSetSample\fP &\fBsample\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 .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\&. .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 .SS "QwtPlotMultiBarChart::QwtPlotMultiBarChart (const \fBQwtText\fP & title)\fC [explicit]\fP" Constructor .PP \fBParameters\fP .RS 4 \fItitle\fP Title of the chart .RE .PP .SH "Member Function Documentation" .PP .SS "QList< \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 .SS "QRectF QwtPlotMultiBarChart::boundingRect () const\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\&. .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 .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 Boundng width for all bars of the smaple .br \fIsample\fP Sample .RE .PP \fBSee also\fP .RS 4 \fBdrawSeries()\fP, \fBsampleWidth()\fP .RE .PP .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 .SS "void QwtPlotMultiBarChart::drawSeries (QPainter * painter, const \fBQwtScaleMap\fP & xMap, const \fBQwtScaleMap\fP & yMap, const QRectF & canvasRect, int from, int to) const\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\&. .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 .SS "QList< \fBQwtLegendData\fP > QwtPlotMultiBarChart::legendData () const\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\&. .SS "\fBQwtGraphic\fP QwtPlotMultiBarChart::legendIcon (int index, const QSizeF & size) const\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\&. .SS "void QwtPlotMultiBarChart::resetSymbolMap ()" Remove all symbols from the symbol map .SS "int QwtPlotMultiBarChart::rtti () const\fC [virtual]\fP" .PP \fBReturns\fP .RS 4 \fBQwtPlotItem::Rtti_PlotBarChart\fP .RE .PP .PP Reimplemented from \fBQwtPlotItem\fP\&. .SS "void QwtPlotMultiBarChart::setBarTitles (const QList< \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 .SS "void QwtPlotMultiBarChart::setSamples (const QVector< QVector< double > > & samples)" Initialize data with an array of samples\&. .PP \fBParameters\fP .RS 4 \fIsamples\fP Vector of points .RE .PP .SS "void QwtPlotMultiBarChart::setSamples (const QVector< \fBQwtSetSample\fP > & samples)" Initialize data with an array of samples\&. .PP \fBParameters\fP .RS 4 \fIsamples\fP Vector of points .RE .PP .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 .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 .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 .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 .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 .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 .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 .SH "Author" .PP Generated automatically by Doxygen for Qwt User's Guide from the source code\&.