Mine

//    ====================================================================================================//    ОТКЛОНЕНИЕ УСРЕДНЁННЫХ ЧАСТОТ	progr=ui->progressBar->value();	progr_step=10.0/ui->Exp_in_s->value();        for (i=0;i<ui->Exp_in_s->value();i++)        {	    progr+=progr_step;	    ui->progressBar->setValue(progr);            MidAllSeries[i]=0.5-MidAllSeries[i];            if (MidAllSeries[i]<0)                MidAllSeries[i]*=(-1);        }        ErrorMidCurve->setData(xPlot,MidAllSeries,ui->Exp_in_s->value()-1);        ErrorMidCurve->setVisible(true);        delete[] MidAllSeries;//    ====================================================================================================//    ОТРИСОВКА ПОГРЕШНОСТЕЙ        ui->error_Plot->setAxisScaleEngine(QwtPlot::xBottom,ErrorScale);        ui->error_Plot->setAxisScale(QwtPlot::xBottom,1,ui->Exp_in_s->value());	ui->error_Plot->setAxisScale(QwtPlot::yLeft,0,1,0.2);        ui->error_Plot->replot();//    ====================================================================================================//    ДЕСТРУКТОР//    ====================================================================================================        MidCurve->setVisible(false);        ErrorMidCurve->setVisible(false);        ErrorExpCurveUp->setVisible(false);        ErrorExpCurveDown->setVisible(false);	ErrorExpCurve->setVisible(false);	ErrorLap->setVisible(false);        delete[] xPlot;        delete MidCurve;        delete ErrorMidCurve;        delete ErrorExpCurveUp;        delete ErrorExpCurveDown;	delete ErrorExpCurve;	delete ErrorLap;	ui->progressBar->setValue(100);