WInform中实现设置ZedGraph中曲线的X轴与Y轴的上限与下限

落日映苍穹つ 2024-04-17 16:05 41阅读 0赞

## 场景 ##

Winforn中设置ZedGraph曲线图的属性、坐标轴属性、刻度属性：

[https://blog.csdn.net/BADAO\_LIUMANG\_QIZHI/article/details/100112573][https_blog.csdn.net_BADAO_LIUMANG_QIZHI_article_details_100112573]

在上面实现曲线相关属性的设置的基础上，要能修改曲线图的X轴以及Y轴的上限和下限。

### 效果 ###

![20190828135354859.gif][]

## 实现 ##

### 设置Y轴的上限 ###

拖拽按钮，双击进入其点击事件

private void button8_Click(object sender, EventArgs e)
            {
                myPane.YAxis.Scale.Max = 1500;
                //更新图表
                zedGraphControl1.Invalidate();
    
            }

### 设置Y轴的下限 ###

拖拽按钮，双击进入其点击事件

private void button9_Click(object sender, EventArgs e)
            {
                myPane.YAxis.Scale.Min = -1500;
                //更新图表
                zedGraphControl1.Invalidate();
            }

### 设置X轴的上限 ###

拖拽按钮，双击进入其点击事件

private void button10_Click(object sender, EventArgs e)
            {
                myPane.XAxis.Scale.Max = 60;
                //更新图表
                zedGraphControl1.Invalidate();
            }

### 设置X轴的下限 ###

拖拽按钮，双击进入其点击事件

private void button11_Click(object sender, EventArgs e)
            {
                myPane.XAxis.Scale.Min = -5;
                //更新图表
                zedGraphControl1.Invalidate();
            }

### 完整示例代码 ###

using System;
    using System.Collections.Generic;
    using System.ComponentModel;
    using System.Data;
    using System.Drawing;
    using System.Linq;
    using System.Text;
    using System.Threading.Tasks;
    using System.Windows.Forms;
    using ZedGraph;
    
    namespace ZedGraphTest
    {
        public partial class Form1 : Form
        {
    
            GraphPane myPane = new GraphPane();
            public Form1()
            {
                InitializeComponent();
                //Form1初始化后创建设置控件的方法并将当前ZedGraph控件传递
                createPane(zedGraphControl1);
            }
    
            //需要引入命名空间--using ZedGraph;
            public void createPane(ZedGraphControl zgc)
            {
                myPane = zgc.GraphPane;
    
               
                //设置图表标题 和 x y 轴标题
                myPane.Title.Text = "霸道测试标题";
    
                myPane.XAxis.Title.Text = "X轴标题";
    
                myPane.YAxis.Title.Text = "Y轴标题";
    
                //更改标题的字体
    
                FontSpec myFont = new FontSpec("Arial",16,Color.Black,false,false,false);
    
                myPane.XAxis.Title.FontSpec = myFont;
    
                myPane.YAxis.Title.FontSpec = myFont;
    
                // 造一些数据，PointPairList里有数据对x，y的数组
    
                Random y = new Random();
    
                PointPairList list1 = new PointPairList();
    
                for (int i = 0; i < 50; i++)
                {
    
                    double x = i;
    
                    double y1 = y.NextDouble() * 1000;
    
                    list1.Add(x, y1); //添加一组数据
    
                }
    
                // 用list1生产一条曲线，标注是“曲线1”
                //SymbolType，枚举代表曲线的样式
                //Square = 0,
                //Diamond = 1,
                //Triangle = 2,
                //Circle = 3,
                //XCross = 4,
                //Plus = 5,
                //Star = 6,
                //TriangleDown = 7,
                //HDash = 8,
                //VDash = 9,
                //UserDefined = 10,
                //Default = 11,
                //None = 12,
                LineItem myCurve = myPane.AddCurve("曲线1", list1, Color.Red, SymbolType.None);
    
                //填充图表颜色
                myPane.Fill = new Fill(Color.White, Color.LightGray, 45.0f);
    
                //以上生成的图标X轴为数字，下面将转换为日期的文本
    
                string[] labels = new string[50];
    
                for (int i = 0; i < 50; i++)
                {
    
                    labels[i] = System.DateTime.Now.AddDays(i).ToShortDateString();
    
                }
    
                #region 坐标轴属性设置
                //X轴类型
                myPane.XAxis.Type = AxisType.Text;  
                //显示小刻度 是false则看不到效果
                myPane.XAxis.MinorGrid.IsVisible = true;
                //线的颜色
                myPane.XAxis.Color = Color.Black;
                //点线中点与点之间的间隔
                myPane.XAxis.MinorGrid.DashOff = 1f;
                //点线中点的长度
                myPane.XAxis.MinorGrid.DashOn = 1f;
                //画笔宽度
                myPane.XAxis.MinorGrid.PenWidth = 1f;
                //
             
                #endregion
    
                #region 坐标轴上刻度线设置
                //X轴文本取值
                myPane.XAxis.Scale.TextLabels = labels;
                //第一个刻度从哪里开始
                myPane.XAxis.Scale.BaseTic = 1;
                //刻度值的字体属性
                myPane.XAxis.Scale.FontSpec = myFont;
              
            
                #endregion
                //画到zedGraphControl1控件中，此句必加
    
                zgc.AxisChange();//在数据变化时绘图
    
                //更新图表
    
                zedGraphControl1.Invalidate();
    
                //重绘控件
    
                Refresh();
    
                #region 属性设置
                //是否允许横向缩放
                this.zedGraphControl1.IsEnableHZoom = true;
                //是否允许纵向缩放
                this.zedGraphControl1.IsEnableVZoom = true;
                //是否允许缩放
                this.zedGraphControl1.IsEnableZoom = true;
                //是否显示右键菜单
                this.zedGraphControl1.IsShowContextMenu = true;
                //复制图像时是否显示提示信息
                this.zedGraphControl1.IsShowCopyMessage = true;
                //鼠标在图表上移动时是否显示鼠标所在点对应的坐标 默认为false
                this.zedGraphControl1.IsShowCursorValues = true;
                //是否显示横向滚动条
                this.zedGraphControl1.IsShowHScrollBar = true;
                //是否显示纵向滚动条
                this.zedGraphControl1.IsShowVScrollBar = true;
                //鼠标经过图表上的点时是否显示该点所对应的值 默认为false
                this.zedGraphControl1.IsShowPointValues = true;
                //使用滚轮时以鼠标所在点为中心进行缩放还是以图形中心进行缩放
                //this.zedGraphControl1.IsZoomOnMouseCenter = true;
                #endregion
                //修改右键为中文菜单
                this.zedGraphControl1.ContextMenuBuilder += MyContextMenuBuilder;
            }
            private void zedGraphControl1_Load(object sender, EventArgs e)
            {
    
            }
    
            /// <summary>
            /// 打印预览
            /// </summary>
            /// <param name="sender"></param>
            /// <param name="e"></param>
            private void button1_Click(object sender, EventArgs e)
            {
                this.zedGraphControl1.DoPrintPreview();
            }
    
            //复制到剪切板
            private void button2_Click(object sender, EventArgs e)
            {
                //ture代表复制成功提示
                this.zedGraphControl1.Copy(true);
            }
    
            /// <summary>
            /// 获取图片并保存
            /// </summary>
            /// <param name="sender"></param>
            /// <param name="e"></param>
            private void button3_Click(object sender, EventArgs e)
            {
                //获取图像
                Image image = this.zedGraphControl1.GetImage();
                //保存照片吗，指定保存路径
                image.Save(@"C:\Users\HAOHAO\Desktop\1.png");
                //弹窗提示
                MessageBox.Show("保存成功");
    
            }
    
            /// <summary>
            /// 显示另存为对话框
            /// </summary>
            /// <param name="sender"></param>
            /// <param name="e"></param>
            private void button4_Click(object sender, EventArgs e)
            {
                this.zedGraphControl1.SaveAs();
            }
    
            /// <summary>
            /// 另存为BMP文件
            /// </summary>
            /// <param name="sender"></param>
            /// <param name="e"></param>
            private void button5_Click(object sender, EventArgs e)
            {
                this.zedGraphControl1.SaveAsBitmap();
            }
            /// <summary>
            /// 另存为EMF文件
            /// </summary>
            /// <param name="sender"></param>
            /// <param name="e"></param>
            private void button6_Click(object sender, EventArgs e)
            {
                this.zedGraphControl1.SaveAsEmf();
            }
            /// <summary>
            /// 一键复原
            /// </summary>
            /// <param name="sender"></param>
            /// <param name="e"></param>
            private void button7_Click(object sender, EventArgs e)
            {
                //一键复原缩放
                this.zedGraphControl1.ZoomOutAll(myPane);
            }
    
    
            //右击菜单变中文
            private static void MyContextMenuBuilder(ZedGraphControl control, ContextMenuStrip menuStrip,
                        Point mousePt, ZedGraphControl.ContextMenuObjectState objState)
            {
                foreach (ToolStripMenuItem item in menuStrip.Items)
                {
                    switch (item.Name)
                    {
                        case "copied_to_clip":
                            item.Text = @"复制到剪贴板";
                            break;
                        case "copy":
                            item.Text = @"复制";
                            break;
                        case "page_setup":
                            item.Text = @"页面设置...";
                            break;
                        case "print":
                            item.Text = @"打印...";
                            break;
                        case "save_as":
                            item.Text = @"另存图表...";
                            break;
                        case "set_default":
                            item.Text = @"恢复默认大小";
                            break;
                        case "show_val":
                            item.Text = @"显示节点数值";
                            break;
                        case "title_def":
                            item.Text = @"标题";
                            break;
                        case "undo_all":
                            item.Text = @"还原缩放/移动";
                            break;
    
                        case "unpan":
                            item.Text = @"还原移动";
                            break;
    
                        case "unzoom":
                            item.Text = @"还原缩放";
                            break;
    
                        case "x_title_def":
                            item.Text = @"X 轴";
                            break;
                        case "y_title_def":
                            item.Text = @"Y 轴";
                            break;
    
                    }
                }
            }
    
            private void button8_Click(object sender, EventArgs e)
            {
                myPane.YAxis.Scale.Max = 1500;
                //更新图表
                zedGraphControl1.Invalidate();
    
            }
    
            //设置Y轴下限
            private void button9_Click(object sender, EventArgs e)
            {
                myPane.YAxis.Scale.Min = -1500;
                //更新图表
                zedGraphControl1.Invalidate();
            }
            /// <summary>
            /// 设置X轴上限
            /// </summary>
            /// <param name="sender"></param>
            /// <param name="e"></param>
            private void button10_Click(object sender, EventArgs e)
            {
                myPane.XAxis.Scale.Max = 60;
                //更新图表
                zedGraphControl1.Invalidate();
            }
            /// <summary>
            /// 设置X轴下限
            /// </summary>
            /// <param name="sender"></param>
            /// <param name="e"></param>
            private void button11_Click(object sender, EventArgs e)
            {
                myPane.XAxis.Scale.Min = -5;
                //更新图表
                zedGraphControl1.Invalidate();
            }
        }
    }

[https_blog.csdn.net_BADAO_LIUMANG_QIZHI_article_details_100112573]: https://blog.csdn.net/BADAO_LIUMANG_QIZHI/article/details/100112573
[20190828135354859.gif]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/17/72445581442b4d29a12c09d6326cbb0e.gif