QT之QCustomPlot的使用（二）--实时曲线

//动态显示的功能
for (int i = 0; i < 10; i++)
{
num[i] = 0;
}
n = 0;
QTimer *timer = new QTimer;
timer->start(500);
connect(timer, SIGNAL(timeout()), this, SLOT(Graph_Show()));

void Graph_Show()
{
QTime t;
t = QTime::currentTime();
qsrand(QTime(0, 0, 0).secsTo(QTime::currentTime()));
n = qrand() % 50;

for (int i = 0; i < 9; i++)
{
num[i] = num[i + 1];
}

num[9] = n;
for (int i = 0; i < 10; i++)
{
temp[i] = i;
temp1[i] = num[i];
}

m_pCustomPlot = new QCustomPlot(this);//初始化曲线图
m_pCustomPlot->setGeometry(1, 1, 400, 300);//初始化曲线图坐标
m_pCustomPlot->setLocale(QLocale(QLocale::Chinese, QLocale::China));

m_pCustomPlot->addGraph();
m_pCustomPlot->graph(0)->setLineStyle(QCPGraph::lsLine);
m_pCustomPlot->graph(0)->setPen(QPen(QColor(0, 0, 255, 200)));
m_pCustomPlot->graph(0)->setScatterStyle(QCPScatterStyle(QCPScatterStyle::ssDisc, 5));
m_pCustomPlot->graph(0)->setData(temp, temp1);

m_pCustomPlot->addGraph();
m_pCustomPlot->graph(1)->setPen(QPen(Qt::red));
m_pCustomPlot->graph(1)->setLineStyle(QCPGraph::lsNone);
m_pCustomPlot->graph(1)->setScatterStyle(QCPScatterStyle::ssDisc);
m_pCustomPlot->graph(1)->setData(temp, temp1);

m_pCustomPlot->xAxis->setTickLabelFont(QFont(QFont().family(), 8));
m_pCustomPlot->yAxis->setTickLabelFont(QFont(QFont().family(), 8));

m_pCustomPlot->xAxis->setLabel(“v”);
m_pCustomPlot->yAxis->setLabel(“mV”);

m_pCustomPlot->xAxis->setRange(0, 10);
m_pCustomPlot->yAxis->setRange(-50, 50);

m_pCustomPlot->xAxis2->setVisible(false);
m_pCustomPlot->yAxis2->setVisible(false);
m_pCustomPlot->xAxis2->setTicks(false);
m_pCustomPlot->yAxis2->setTicks(false);
m_pCustomPlot->xAxis2->setTickLabels(false);
m_pCustomPlot->yAxis2->setTickLabels(false);

m_pCustomPlot->replot();
}