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plot.cpp
C++
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#include <QtGui>
 
#include <qwt_plot.h>
#include <qwt_plot_curve.h>
 
int main (int argc, char** argv)
{
QApplication app( argc, argv );
 
QwtPlot plot;
QwtPlotCurve curve;
 
curve.setSamples( QVector<QPointF>
{ QPointF(1, 1), QPointF(2, 3), QPointF(3, 2), QPointF(4, -1) } );
curve.attach( &plot );
plot.show();
qDebug() << plot.axisInterval( QwtPlot::xBottom );
 
return app.exec();
}

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