int HUGE_VOL = 400000;
void MainWindow::ergodicity() {
    process.clear();
    QVector<double> tmp;
    genProcess(tmp, HUGE_VOL);

    // берем каждое NUM_SEL'ое значение из реализации процесса
    int k = 0;
    for (int i = 0; i < HUGE_VOL; ++i) {
        if (i == HUGE_VOL/NUM_SEL*k) {
            process.push_back(tmp[i]);
            k++;
        }
    }

    qSort(process);

    double delta = getDelta(process, selectionT1, NUM_SEL);
    double lambda = delta*sqrt(NUM_SEL*NUM_SEL/(NUM_SEL+NUM_SEL));
    ui->ergoL->setText(QString("Lambda = %1").arg(lambda));
    qDebug() << "Le = " << lambda;

    for (int i = 0; i < NUM_SEL; ++i){
        frv.push_back((double)(i+1)/NUM_SEL);
    }

    QPen penSel1;
    penSel1.setWidth(2);
    penSel1.setBrush(Qt::red);
    penSel1.setCapStyle(Qt::RoundCap);
    penSel1.setJoinStyle(Qt::RoundJoin);

    QPen penSel2;
    penSel2.setWidth(2);
    penSel2.setBrush(Qt::blue);
    penSel2.setCapStyle(Qt::RoundCap);
    penSel2.setJoinStyle(Qt::RoundJoin);

    ui->ergoPlot->addGraph();
    ui->ergoPlot->graph(0)->setData(process, frv);
    ui->ergoPlot->addGraph();
    ui->ergoPlot->graph(1)->setData(selectionT1, frv);//(selection_proc, frv);
    ui->ergoPlot->graph(0)->setPen(penSel1);
    ui->ergoPlot->graph(1)->setPen(penSel2);
    ui->ergoPlot->xAxis->setLabel("x1 , x2");
    ui->ergoPlot->yAxis->setLabel("F1(x), F2(x)");
    ui->ergoPlot->rescaleAxes();
    ui->ergoPlot->setInteractions(QCP::iRangeDrag | QCP::iRangeZoom);
    ui->ergoPlot->replot();
}