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