/////////////////////////////////////////////////////////////////
/////////////////////////////////////////////////////////////////
// NE PAS MODIFIER JUSQU'A NOUVEL ORDRE!!!!
/////////////////////////////////////////////////////////////////
/////////////////////////////////////////////////////////////////
    // create graph and assign data to it:
    customPlot->addGraph();
    customPlot->graph(0)->setPen(QPen(Qt::green));
    customPlot->graph(0)->setData(t, et);
    // give the axes some labels:
    customPlot->xAxis->setLabel("t");
    customPlot->yAxis->setLabel("valeur  ");
    // set axes ranges, so we see all data:
    customPlot->xAxis->setRange(0, t[nbEchantillons-1]);
    customPlot->yAxis->setRange(0,MaxQuantADC);
    customPlot->addGraph();
    customPlot->graph(1)->setPen(QPen(Qt::red));
    customPlot->graph(1)->setData(t, st);
    if (affichageVirguleFixe)
    {
        customPlot->addGraph();
        customPlot->graph(2)->setPen(QPen(Qt::black));
        customPlot->graph(2)->setData(t, etvfixe);
        customPlot->addGraph();
        customPlot->graph(3)->setPen(QPen(Qt::blue));
        customPlot->graph(3)->setData(t, stvfixe);
    }
    QColor c(128,128,128);
    QBrush b(c);
    customPlot->setBackground(b);

    if (affichageTemporel==FALSE)
    {
        customPlot->graph(0)->setLineStyle(QCPGraph::lsImpulse);
        customPlot->graph(1)->setLineStyle(QCPGraph::lsImpulse);
        customPlot->graph(0)->setScatterStyle(QCPScatterStyle(QCPScatterStyle:: ssCircle, 5));
        customPlot->graph(1)->setScatterStyle(QCPScatterStyle(QCPScatterStyle:: ssCross, 5));
        if (affichageVirguleFixe)
        {
            customPlot->graph(2)->setLineStyle(QCPGraph::lsImpulse);
            customPlot->graph(3)->setLineStyle(QCPGraph::lsImpulse);
            customPlot->graph(2)->setScatterStyle(QCPScatterStyle(QCPScatterStyle:: ssSquare, 5));
            customPlot->graph(3)->setScatterStyle(QCPScatterStyle(QCPScatterStyle:: ssPlus, 5));
        }

    }
    else
    {
        customPlot->graph(0)->setLineStyle(QCPGraph::lsStepLeft);
        customPlot->graph(1)->setLineStyle(QCPGraph::lsStepLeft);
        if (affichageVirguleFixe)
        {
            customPlot->graph(2)->setLineStyle(QCPGraph::lsStepLeft);
            customPlot->graph(3)->setLineStyle(QCPGraph::lsStepLeft);
        }
    }
    customPlot->legend->setVisible(true);
    customPlot->legend->setFont(QFont("Helvetica",9));
    // set locale to english, so we get english decimal separator:
    customPlot->setLocale(QLocale(QLocale::English, QLocale::UnitedKingdom));
    customPlot->graph(0)->setName("e(t)");
    customPlot->graph(1)->setName("s(t)");
    if (affichageVirguleFixe)
    {
        customPlot->graph(2)->setName("e(t) vfixe");
        customPlot->graph(3)->setName("s(t) vfixe");
    }
    // configure right and top axis to show ticks but no labels:
    // (see QCPAxisRect::setupFullAxesBox for a quicker method to do this)
    customPlot->xAxis2->setVisible(true);
    customPlot->xAxis2->setTickLabels(false);
    customPlot->yAxis2->setVisible(true);
    customPlot->yAxis2->setTickLabels(false);
    // make left and bottom axes always transfer their ranges to right and top axes:
    connect(customPlot->xAxis, SIGNAL(rangeChanged(QCPRange)), customPlot->xAxis2, SLOT(setRange(QCPRange)));
    connect(customPlot->yAxis, SIGNAL(rangeChanged(QCPRange)), customPlot->yAxis2, SLOT(setRange(QCPRange)));
    // let the ranges scale themselves so graph 0 fits perfectly in the visible area:
    customPlot->graph(0)->rescaleAxes();
    // same thing for graph 1, but only enlarge ranges (in case graph 1 is smaller than graph 0):
    customPlot->graph(1)->rescaleAxes(true);
    if (affichageVirguleFixe)
    {
        customPlot->graph(2)->rescaleAxes(true);
        customPlot->graph(3)->rescaleAxes(true);
    }
    // Note: we could have also just called customPlot->rescaleAxes(); instead
    // Allow user to drag axis ranges with mouse, zoom with mouse wheel and select graphs by clicking:
    customPlot->setInteractions(QCP::iRangeDrag | QCP::iRangeZoom | QCP::iSelectPlottables);
}
///////////////////////////////////////////////////////////////////////