// prepare data: QVector<double> x1(20), y1(20); QVector<double> x2(100), y2(100); QVector<double> x3(20), y3(20); QVector<double> x4(20), y4(20); for (int i=0; i<x1.size(); ++i) { x1[i] = i/(double)(x1.size()-1)*10; y1[i] = qCos(x1[i]*0.8+qSin(x1[i]*0.16+1.0))*qSin(x1[i]*0.54)+1.4; } for (int i=0; i<x2.size(); ++i) { x2[i] = i/(double)(x2.size()-1)*10; y2[i] = qCos(x2[i]*0.85+qSin(x2[i]*0.165+1.1))*qSin(x2[i]*0.50)+1.7; } for (int i=0; i<x3.size(); ++i) { x3[i] = i/(double)(x3.size()-1)*10; y3[i] = 0.05+3*(0.5+qCos(x3[i]*x3[i]*0.2+2)*0.5)/(double)(x3[i]+0.7)+qrand()/(double)RAND_MAX*0.01; } for (int i=0; i<x4.size(); ++i) { x4[i] = x3[i]; y4[i] = (0.5-y3[i])+((x4[i]-2)*(x4[i]-2)*0.02); } // create and configure plottables: QCPGraph *graph1 = customPlot->addGraph(); graph1->setData(x1, y1); graph1->setScatterStyle(QCPScatterStyle(QCPScatterStyle::ssCircle, QPen(Qt::black, 1.5), QBrush(Qt::white), 9)); graph1->setPen(QPen(QColor(120, 120, 120), 2)); QCPGraph *graph2 = customPlot->addGraph(); graph2->setData(x2, y2); graph2->setPen(Qt::NoPen); graph2->setBrush(QColor(200, 200, 200, 20)); graph2->setChannelFillGraph(graph1); QCPBars *bars1 = new QCPBars(customPlot->xAxis, customPlot->yAxis); bars1->setWidth(9/(double)x3.size()); bars1->setData(x3, y3); bars1->setPen(Qt::NoPen); bars1->setBrush(QColor(10, 140, 70, 160)); QCPBars *bars2 = new QCPBars(customPlot->xAxis, customPlot->yAxis); bars2->setWidth(9/(double)x4.size()); bars2->setData(x4, y4); bars2->setPen(Qt::NoPen); bars2->setBrush(QColor(10, 100, 50, 70)); bars2->moveAbove(bars1); // move bars above graphs and grid below bars: customPlot->addLayer("abovemain", customPlot->layer("main"), QCustomPlot::limAbove); customPlot->addLayer("belowmain", customPlot->layer("main"), QCustomPlot::limBelow); graph1->setLayer("abovemain"); customPlot->xAxis->grid()->setLayer("belowmain"); customPlot->yAxis->grid()->setLayer("belowmain"); // set some pens, brushes and backgrounds: customPlot->xAxis->setBasePen(QPen(Qt::white, 1)); customPlot->yAxis->setBasePen(QPen(Qt::white, 1)); customPlot->xAxis->setTickPen(QPen(Qt::white, 1)); customPlot->yAxis->setTickPen(QPen(Qt::white, 1)); customPlot->xAxis->setSubTickPen(QPen(Qt::white, 1)); customPlot->yAxis->setSubTickPen(QPen(Qt::white, 1)); customPlot->xAxis->setTickLabelColor(Qt::white); customPlot->yAxis->setTickLabelColor(Qt::white); customPlot->xAxis->grid()->setPen(QPen(QColor(140, 140, 140), 1, Qt::DotLine)); customPlot->yAxis->grid()->setPen(QPen(QColor(140, 140, 140), 1, Qt::DotLine)); customPlot->xAxis->grid()->setSubGridPen(QPen(QColor(80, 80, 80), 1, Qt::DotLine)); customPlot->yAxis->grid()->setSubGridPen(QPen(QColor(80, 80, 80), 1, Qt::DotLine)); customPlot->xAxis->grid()->setSubGridVisible(true); customPlot->yAxis->grid()->setSubGridVisible(true); customPlot->xAxis->grid()->setZeroLinePen(Qt::NoPen); customPlot->yAxis->grid()->setZeroLinePen(Qt::NoPen); customPlot->xAxis->setUpperEnding(QCPLineEnding::esSpikeArrow); customPlot->yAxis->setUpperEnding(QCPLineEnding::esSpikeArrow); QLinearGradient plotGradient; plotGradient.setStart(0, 0); plotGradient.setFinalStop(0, 350); plotGradient.setColorAt(0, QColor(80, 80, 80)); plotGradient.setColorAt(1, QColor(50, 50, 50)); customPlot->setBackground(plotGradient); QLinearGradient axisRectGradient; axisRectGradient.setStart(0, 0); axisRectGradient.setFinalStop(0, 350); axisRectGradient.setColorAt(0, QColor(80, 80, 80)); axisRectGradient.setColorAt(1, QColor(30, 30, 30)); customPlot->axisRect()->setBackground(axisRectGradient); customPlot->rescaleAxes(); customPlot->yAxis->setRange(0, 2);