43 lines
1.1 KiB
C++
43 lines
1.1 KiB
C++
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#include <qapplication.h>
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#include <qwt_plot.h>
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#include <qwt_plot_curve.h>
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#include <qwt_plot_grid.h>
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#include <qwt_symbol.h>
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#include <qwt_legend.h>
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int main( int argc, char **argv )
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{
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QApplication a( argc, argv );
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QwtPlot plot;
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plot.setTitle( "Plot Demo" );
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plot.setCanvasBackground( Qt::white );
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plot.setAxisScale( QwtPlot::yLeft, 0.0, 10.0 );
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plot.insertLegend( new QwtLegend() );
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QwtPlotGrid *grid = new QwtPlotGrid();
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grid->attach( &plot );
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QwtPlotCurve *curve = new QwtPlotCurve();
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curve->setTitle( "Some Points" );
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curve->setPen( Qt::blue, 4 ),
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curve->setRenderHint( QwtPlotItem::RenderAntialiased, true );
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QwtSymbol *symbol = new QwtSymbol( QwtSymbol::Ellipse,
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QBrush( Qt::yellow ), QPen( Qt::red, 2 ), QSize( 8, 8 ) );
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curve->setSymbol( symbol );
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QPolygonF points;
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points << QPointF( 0.0, 4.4 ) << QPointF( 1.0, 3.0 )
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<< QPointF( 2.0, 4.5 ) << QPointF( 3.0, 6.8 )
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<< QPointF( 4.0, 7.9 ) << QPointF( 5.0, 7.1 );
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curve->setSamples( points );
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curve->attach( &plot );
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plot.resize( 600, 400 );
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plot.show();
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return a.exec();
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}
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