C# ZedGraph实时多条曲线数据更新实例
先看展示效果
1.创建曲线实例添加必要的元素
1 public class LineChannel
2 {
3 public LineChannel(int id,int number,string name,string type,bool selected,Color lineColor,int lineWidth)
4 {
5 this.id = id;
6 this.number = number;
7 this.name = name;
8 this.type = type;
9 this.selected = selected;
10 this.lineColor = lineColor;
11 this.lineWidth = lineWidth;
12 }
13
14 private int id;
15 private int number;
16 private string name;
17 private string type;
18 private bool selected;
19 private Color lineColor;
20 private int lineWidth;
21
22
23 public int ID
24 {
25 get { return this.id; }
26 //set { this.id = value; }
27 }
28
29 public int Number
30 {
31 get { return this.number; }
32 }
33
34 public string Name
35 {
36 get { return this.name; }
37 //set { this.name = value; }
38 }
39
40 public string Type
41 {
42 get { return this.type; }
43 //set { this.type = value; }
44 }
45 public bool Selected
46 {
47 get { return this.selected; }
48 set { this.selected = value; }
49 }
50 public Color LineColor
51 {
52 get { return this.lineColor; }
53 set { this.lineColor = value; }
54 }
55 public int LineWidth
56 {
57 get { return this.lineWidth; }
58 set { this.lineWidth = value; }
59 }
60
61 }
2.初始化控件增加曲线
1 //加载创建曲线数据
2 LineChannel lineChannel1 = new LineChannel(1111, 1, "曲线 1", "温度", true, Color.Red, 1);
3 LineChannel lineChannel2 = new LineChannel(2222, 2, "曲线 2", "温度", true, Color.Green, 1);
4 LineChannel lineChannel3 = new LineChannel(3333, 3, "曲线 3", "温度", true, Color.Gray, 1);
5 LineChannel lineChannel4 = new LineChannel(4444, 4, "曲线 4", "温度", true, Color.Black, 1);
6
7 this.lines.Add(lineChannel1);
8 this.lines.Add(lineChannel2);
9 this.lines.Add(lineChannel3);
10 this.lines.Add(lineChannel4);
11
12
13 //获取引用
14 GraphPane myPane = zedGraphControl1.GraphPane;
15 //设置标题
16 myPane.Title.Text = "实时曲线";
17 //设置X轴说明文字
18 myPane.XAxis.Title.Text = "时间";
19 //设置Y轴说明文字
20 myPane.YAxis.Title.Text = "温度";
21
22
23 //添加曲线
24 foreach (LineChannel channel in this.lines)
25 {
26 RollingPointPairList list = new RollingPointPairList(1200);
27 LineItem curve = myPane.AddCurve(channel.Name, list, channel.LineColor, SymbolType.None);
28 }
29
30
31 int increment = 30;//单位s
32
33
34
35
36 myPane.XAxis.Scale.Min = 0; //X轴最小值0
37 myPane.XAxis.Scale.Max = 30; //X轴最大30
38 myPane.XAxis.Scale.MinorStep = 1;//X轴小步长1,也就是小间隔
39 myPane.XAxis.Scale.MajorStep = 5;//X轴大步长为5，也就是显示文字的大间隔
40
41 //改变轴的刻度
42 zedGraphControl1.AxisChange();
43 this.zedGraphControl1.Invalidate();
44 this.dataGridViewLines.DataSource = this.lines;
45 this.dataGridViewLines.ClearSelection();
3.增加线程处理 模拟数据
1 //保存开始时间
2 tickStart = Environment.TickCount;
3 stop = false;
4 BackgroundWorker worker = sender as BackgroundWorker;
5
6 isSampling = true;
7 List<LineChannel> channels = this.lines;
8 //DoWork
9 LineData lineData;
10 while (isSampling)
11 {
12 lineData = new LineData();
13
14
15 //获取数据
16 double time = (Environment.TickCount - tickStart) / 1000.0;
17 double data = Math.Sin(2.0 * Math.PI * time / 3.0);
18 double data2 = data - 0.4;
19 double data3 = data - 0.8;
20 double data4 = data - 1.2;
21
22 //添加数据
23 lineData.Add(channels[0], time, data);
24 lineData.Add(channels[1], time, data2);
25 lineData.Add(channels[2], time, data3);
26 lineData.Add(channels[3], time, data4);
27
28 //上报数据处理
29 worker.ReportProgress(0, lineData);
30
31 Thread.Sleep(50);
32 }
4.数据接受更新曲线
1 LineData lineData = e.Data;
2
3 double time = 0, data = 0;
4
5 foreach (LineChannel channel in lineData.Channels)
6 {
7 if (e.Data.GetData(channel, out time, out data))
8 {
9 LineItem curve = null;
10
11 foreach (var item in zedGraphControl1.GraphPane.CurveList)
12 {
13 if (item.Label.Text == channel.Name)
14 curve = item as LineItem;
15 }
16
17 if (curve != null)
18 {
19 IPointListEdit list = curve.Points as IPointListEdit;
20 list.Add(time, data);
21 }
22
23 curve.IsVisible = channel.Selected;
24 curve.Line.Width = channel.LineWidth;
25 curve.Line.Color = channel.LineColor;
26
27
28 }
29
30
31 }
32
33
34 Scale xScale = zedGraphControl1.GraphPane.XAxis.Scale;
35 if (time > xScale.Max - xScale.MajorStep)
36 {
37 xScale.Max = time + xScale.MajorStep;
38 xScale.Min = xScale.Max - 30.0;
39 }
40
41
42 //if (time > xScale.Max)
43 //{
44 // xScale.Max = time;
45 // xScale.Min = xScale.Max - 30;
46 //}
47
48
49 //第三步:调用ZedGraphControl.AxisChange()方法更新X和Y轴的范围
50 zedGraphControl1.AxisChange();
51
52 //第四步:调用Form.Invalidate()方法更新图表
53 zedGraphControl1.Invalidate();
程序运行效果
初始化曲线
开始采集
程序源代码工程下载
实现了比较基础简单的功能，提供思路，遇到bug不要惊讶，没有细调，需要源代码可以留言，给出邮箱，看到后会回复。
本程序参考
https://www.cnblogs.com/chuhj/p/7988404.html
原文地址：https://www.cnblogs.com/JiYF/p/11182658.html
时间： 2024-11-09 03:06:11