QCustomPlot的用法

来源：互联网发布：手机拍照赚钱软件编辑：程序博客网时间：2024/06/16 12:35
#include <QApplication>#include <QLabel>#include <QLineEdit>#include <QGridLayout>#include <QWidget>#include <qcustomplot.h>#include <QMainWindow>#include <QDebug>int main(int argc, char *argv[]){    QApplication app(argc, argv);        //得到数据    QVector<double> x(5),y0(5),y1(5),y2(5);    for(int i=0;i<5;i++){        x[i]=i;        y0[i]=i+10;        y1[i]=i+20;        y2[i]=i+50;    }    //创建QCustomPlot,添加曲线graph,并设置曲线的数据    QCustomPlot *customPlot=new QCustomPlot;    customPlot->addGraph();    customPlot->graph(0)->setName("fist line");    customPlot->graph(0)->setData(x,y0);    customPlot->addGraph();    customPlot->graph(1)->setName("second line");    customPlot->graph(1)->setData(x,y1);    customPlot->addGraph();    customPlot->graph(2)->setName("third line");    customPlot->graph(2)->setData(x,y2);    //自适应轴    customPlot->graph(0)->rescaleAxes(true);    customPlot->graph(1)->rescaleAxes(true);    customPlot->graph(2)->rescaleAxes(true);    //显示铭文    customPlot->legend->setVisible(true);    //设置customPlot可进行拽托或伸缩    customPlot->setInteractions(QCP::iRangeDrag | QCP::iRangeZoom);    customPlot->axisRect()->setRangeDrag(Qt::Horizontal);  //设置允许在某一方向上拽托    customPlot->axisRect()->setRangeZoom(Qt::Horizontal);  //设置允许在某一方向上伸缩    QMainWindow window;    window.setCentralWidget(customPlot);    window.resize(500,300);    window.show();    /*    //得到数据    QVector<double> x(8),y(8);    for(int i=0;i<8;i++){        x[i]=i;        y[i]=i*i;    }    //创建QCustomPlot,添加曲线graph,并设置曲线的数据    QCustomPlot *customPlot=new QCustomPlot;    customPlot->addGraph();    customPlot->graph(0)->setName("fist line");    customPlot->graph(0)->setData(x,y);    //设置轴    QSharedPointer<QCPAxisTickerText> textTicker(new QCPAxisTickerText);    textTicker->addTick(1.0, "Bacteria");    textTicker->addTick(2.0, "Protozoa");    textTicker->addTick(3.0, "Chromista");    textTicker->addTick(4.0, "Plants");    textTicker->addTick(5.0, "Fungi");    textTicker->addTick(6.0, "Animals");    textTicker->addTick(8.0, "Vogons");    customPlot->xAxis->setTicker(textTicker);    //自适应轴    customPlot->graph(0)->rescaleAxes(true);    //显示铭文    customPlot->legend->setVisible(true);    //设置customPlot可进行拽托或放大    customPlot->setInteractions(QCP::iRangeDrag | QCP::iRangeZoom);    QMainWindow window;    window.setCentralWidget(customPlot);    window.resize(500,300);    window.show();*/    return app.exec();}
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