设置轴的刻度格式

  1. // axisX->setLabelFormat("%g");
  2. %A 浮点数、十六进制数字和p-记法（C99）
  3. %c 一个字符 
  4. %d 有符号十进制整数 
  5. %e 浮点数、e-记数法
  6. %E 浮点数、E-记数法
  7. %f 浮点数、十进制记数法 
  8. %g 根据数值不同自动选择％f或％e．
  9. %G 根据数值不同自动选择％f或％e.
  10. %i 有符号十进制数（与％d相同）
  11. %o 无符号八进制整数
  12. %p 指针 
  13. %s 字符串
  14. %u 无符号十进制整数
  15. %x 使用十六进制数字0f的无符号十六进制整数 
  16. %X 使用十六进制数字0f的无符号十六进制整数
  17. %% 打印一个百分号

设置散点图和线性图

image.png

dialogGUI.h

  1. #ifndef DIALOG_GUI_H
  2. #define DIALOG_GUI_H
  4. #include <QDialog>
  5. #include <QCache>
  7. #include <QtCharts>
  9. #include <QtCharts/QSplineSeries>
  10. #include <QDateTime>
  11. #include <QByteArray>
  13. namespace Ui {
  14. class DialogGUI;
  15. }
  17. class DialogGUI : public QDialog
  18. {
  19.     Q_OBJECT
  21. public:
  22.     explicit DialogGUI(QWidget *parent = 0);
  23.     ~DialogGUI();
  26.     QList<QPointF > PointF;
  29.     void sltCategoriesChanged(QByteArray);
  31.     float publicFloatFun(QByteArray dat, quint8 basic_addres);
  35. public slots:
  38. private slots:
  40. //    void sltpushButton();
  41. //    void sltpushButton_2();
  42. //    void sltpushButton_3();
  45. signals:
  48. private:
  49.     Ui::DialogGUI *ui;
  51.     void initline();
  53.     QChart*                     m_chart;
  54.     QLineSeries*                m_lineSeries;
  55.     QScatterSeries*             m_scatterSeries;
  56.     QBarCategoryAxis*           m_axis;
  57.     QValueAxis*                 m_axisY;
  58.     QValueAxis*                 m_axisX;
  59.     QChartView*                 m_chartView;
  60.     QList<int>                  m_list;
  61. };
  63. #endif // DialogGUI_H

dialogGUI.cpp

  1. #include "dialogGUI.h"
  2. #include "ui_dialogGUI.h"
  4. #include <QtCharts/QAbstractAxis>
  5. #include <QtCharts/QValueAxis>
  6. #include <QtCore/QTime>
  7. #include <QtCore/QDebug>
  8. #include <QPen>
  9. #include <QPainter>
  10. #include <QtCharts\QLegendMarker>
  11. #include <QChartView>
  13. #define debug qDebug() << "[" << __FILE__ << ":" << __LINE__ << "]" // 调试
  16. DialogGUI::DialogGUI(QWidget *parent) :
  17.     QDialog(parent),
  18.     ui(new Ui::DialogGUI)
  19. {
  20.     ui->setupUi(this);
  22.     // initChart("name", 10, 50);
  23.     float a = 1.32;
  24.     float b = 5.56;
  26.     PointF.append(QPointF(a, b));
  27.     PointF.append(QPointF(3, 0));
  28.     PointF.append(QPointF(7, 6));
  29.     PointF.append(QPointF(9, 7));
  30.     PointF.append(QPointF(10, 6));
  31.     PointF.append(QPointF(8, 6));
  32.     PointF.append(QPointF(5, 2));
  33.     PointF.append(QPointF(7, 9));
  34.     PointF.append(QPointF(8, 6));
  35.     PointF.append(QPointF(15, 6));
  37.     // 初始化
  38.     initline();
  40. }
  42. DialogGUI::~DialogGUI()
  43. {
  44.     delete ui;
  45. }
  47. /*-------------------------------------------------------------*/
  48. void DialogGUI::initline()
  49. {
  50.     m_chart = new QChart();
  51.     m_chart->setAnimationOptions(QChart::SeriesAnimations);
  53.     // 线性图
  54.     m_lineSeries = new QLineSeries(m_chart);
  55.     m_lineSeries->setPen(QPen(Qt::lightGray,2,Qt::SolidLine));
  56.     m_lineSeries->setColor(QColor(248, 167, 0));
  58.     // 散点图
  59.     m_scatterSeries = new QScatterSeries(m_chart);
  60.     m_scatterSeries->setMarkerShape(QScatterSeries::MarkerShapeRectangle); // 设置标志形状
  61.     m_scatterSeries->setMarkerSize(7); // 设置标记大小
  64.     // 将线性图和散点图添加到图表上
  65.     m_chart->addSeries(m_lineSeries);
  66.     m_chart->addSeries(m_scatterSeries);
  67.     m_chart->setTitle("单表标定点数"); // 设置曲线名字
  70.     // 循环添加
  71.     foreach (QPointF item, PointF) {
  72.         m_lineSeries->append(item); // 添加折线
  73.         m_scatterSeries->append(item); // 添加散点
  74.     }
  77.     // x轴
  78.     m_axisX = new QValueAxis;
  79.     m_axisX->setRange(0, 60); // 设置x轴范围
  80.     m_axisX->setTickCount(10);     //设置多少格
  81.     m_axisX->setMinorTickCount(5); //设置每格小刻度线的数目
  82.     m_chart->setAxisX(m_axisX, m_lineSeries);
  83.     m_chart->setAxisX(m_axisX, m_scatterSeries);
  86.    // m_chart->createDefaultAxes(); // 创建默认轴
  87.     // m_chart->axisX()->setRange(0, 30); // 设置x轴范围
  89.     // m_chart->setAcceptTouchEvents(true); // 设置接受触摸事件
  92.     m_axisY = new QValueAxis;
  93.     m_axisY->setRange(0, 30); // 设置y轴范围
  94.     //    m_axisY->setLabelFormat("%u"); //设置刻度的格式
  95.     //    m_axisY->setGridLineVisible(true); // 设置网格线可见
  96.     m_axisY->setTickCount(10);     //设置多少格
  97.     m_axisY->setMinorTickCount(5); //设置每格小刻度线的数目
  99.     m_chart->setAxisY(m_axisY, m_lineSeries);
  100.     m_chart->setAxisY(m_axisY, m_scatterSeries);
  102.     m_chart->legend()->setVisible(true);
  103.     m_chart->legend()->setAlignment(Qt::AlignBottom);
  104.     m_chart->legend()->hide(); // 隐藏图表说明
  107.     // 视图
  108.     m_chartView = new QChartView(m_chart);
  109.     m_chartView->setRenderHint(QPainter::Antialiasing); // 抗锯齿
  112.     // 设置主题
  113.     m_chartView->chart()->setTheme(QChart::ChartThemeBrownSand);
  115.     // 颜色
  116.     QPalette pal = window()->palette();
  117.     pal.setColor(QPalette::Window, QRgb(0x9e8965));
  118.     pal.setColor(QPalette::WindowText, QRgb(0x404044));
  119.     window()->setPalette(pal); // 设置调色板
  120.     ui->verticalLayout->addWidget(m_chartView); // 将图表添加到ui上
  122. }
  124. // 槽函数，用于接收数据并显示到gui上
  125. void DialogGUI::sltCategoriesChanged(QByteArray data)
  126. {
  127.     m_lineSeries->clear();
  128.     m_scatterSeries->clear();
  130.     m_chart->axisX()->setRange(0, publicFloatFun(data ,3 + 29 * 8)); // 设置x轴范围
  131.     // m_axisX->setRange(0, publicFloatFun(data ,3 + 29 * 8)); // 设置x轴范围
  132.     m_axisY->setRange(0, publicFloatFun(data ,7 + 29 * 8)); // 设置y轴范围
  134.     for(uchar i = 0; i < 30; i++)
  135.     {
  136.         m_lineSeries->append(publicFloatFun(data ,3 + i * 8), publicFloatFun(data ,7 + i * 8)); // 添加折线
  137.         m_scatterSeries->append(publicFloatFun(data ,3 + i * 8), publicFloatFun(data ,7 + i * 8)); // 添加散点
  138.     }
  140.     debug << "刷新GUI数据";
  142. }
  144. // 公共函数
  145. float DialogGUI::publicFloatFun(QByteArray dat, quint8 basic_addres)
  146. {
  147.     union{
  148.         float a;
  149.         quint8 dat[4];
  150.     }f_to_dat;
  151.     f_to_dat.dat[0] = dat[basic_addres + 0];
  152.     f_to_dat.dat[1] = dat[basic_addres + 1];
  153.     f_to_dat.dat[2] = dat[basic_addres + 2];
  154.     f_to_dat.dat[3] = dat[basic_addres + 3];
  155.     return f_to_dat.a;
  157. }
  159. /*-------------------------------------------------------------*/