CustomPlot test

来源：互联网发布：中心机房云计算编辑：程序博客网时间：2024/05/20 00:49
#include "mainwindow.h"#include "ui_mainwindow.h"#include"qcustomplot.h"MainWindow::MainWindow(QWidget *parent) :    QMainWindow(parent),    ui(new Ui::MainWindow){        ui->setupUi(this);        QCustomPlot *pCustomPlot = new QCustomPlot(this);        pCustomPlot->resize(400, 300);        // 可变数组存放绘图的坐标的数据，分别存放x和y坐标的数据，101为数据长度        QVector<double> x(101), y(101);        // 添加数据，这里演示y = x^3，为了正负对称，x从-10到+10        for (int i = 0; i < 100; ++i)        {            x[i] = i;            y[i] = 20*sin(x[i]);  // x的y次方;        }        // 向绘图区域QCustomPlot添加一条曲线        QCPGraph *pGraph = pCustomPlot->addGraph();        pCustomPlot->addGraph();        pCustomPlot->addGraph();        // 添加数据        pCustomPlot->graph(0)->setData(x, y);        pCustomPlot->graph(1)->setData(x, y);        pCustomPlot->xAxis->setLabel("x");        pCustomPlot->yAxis->setLabel("y");        // 设置背景色        pCustomPlot->setBackground(QColor(50, 50, 50));        pGraph->setPen(QPen(QColor(32, 178, 170)));        pCustomPlot->xAxis->setTickLabelColor(Qt::red);        pCustomPlot->xAxis->setLabelColor(QColor(255, 0, 0));        //设置x基准轴颜色        pCustomPlot->xAxis->setBasePen(QPen(QColor(255, 255, 0)));        pCustomPlot->xAxis->setTickPen(QPen(QColor(255, 255, 0)));        pCustomPlot->xAxis->setSubTickPen(QColor(255, 165, 0));        QFont xFont = pCustomPlot->xAxis->labelFont();        xFont.setPixelSize(20);        pCustomPlot->xAxis->setLabelFont(xFont);        //获取句柄并进行设置,去除默认的虚线网格,导出类，编辑设置相应的参数        QCPGrid* grid=pCustomPlot->xAxis->grid();        grid->setVisible(false);        grid=pCustomPlot->yAxis->grid();        grid->setVisible(false);        //设置刻度文字字体的颜色        pCustomPlot->yAxis->setTickLabelColor(Qt::red);        //设置旁边的标签字体的颜色        pCustomPlot->yAxis->setLabelColor(QColor(255, 0, 0));        //设置Y基准轴的颜色        pCustomPlot->yAxis->setBasePen(QPen(QColor(255, 255, 0)));        //主刻度颜色        pCustomPlot->yAxis->setTickPen(QPen(QColor(255, 255, 255)));        //子刻度颜色        pCustomPlot->yAxis->setSubTickPen(QColor(255, 255, 0));        //yFont先获取y坐标轴的标签的字体，在进行编辑yFont        QFont yFont = pCustomPlot->yAxis->labelFont();        //编辑        yFont.setPixelSize(20);        //设置yFont        pCustomPlot->yAxis->setLabelFont(yFont);        //设置xy坐标基准轴的子刻度主刻度的长度，第一个参数表示向内延的像素单位，第二个向外的像素单位        pCustomPlot->xAxis->setTickLength(10, 0);        pCustomPlot->xAxis->setSubTickLength(5, 0);        pCustomPlot->yAxis->setTickLength(10,0);        pCustomPlot->yAxis->setSubTickLength(5,0);       // pCustomPlot->yAxis->setAutoTicks(false);       // pCustomPlot->yAxis->setAutoTickLabels(false);        //pCustomPlot->yAxis->setTickVector(QVector<double>() << 0 <<10<<20<<30);        //pCustomPlot->yAxis->setTickVectorLabels(QVector<QString>() << "Not so\nhigh" << "Very\nhigh");       // pCustomPlot->xAxis->setAutoTickStep(false);       //pCustomPlot->xAxis->setTickStep(0.1); // one month in seconds        //pCustomPlot->xAxis->setSubTickCount(3);        // 设置坐标轴显示范围，否则只能看到默认范围        pCustomPlot->xAxis->setRange(0, 100, Qt::AlignLeft);       // pCustomPlot->xAxis->setRange(-100, 100);        pCustomPlot->yAxis->setRange(-100, 100);        //保存成图片格式       // pCustomPlot->savePng("D://customPlot.png", 400, 300);        //让坐标系支持拖放，缩放，        // pCustomPlot->setInteractions(QCP::iRangeDrag | QCP::iRangeZoom | QCP::iSelectPlottables);}MainWindow::~MainWindow(){    delete ui;}
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