zedGraph画多个图表

起初是想到用多个zedGraph做。然后实际做的时候 zedGraph的同步一直做的不好。尤其当采样速度很快的时候很难保持好。甚至会出现界面假死和卡死的现象。

因此想用其他解决方法：

查看资料后 发现了zedGraph的MasterPane： 它允许一个zedGraph控件 绘制多张Graphpane。并且只要zedGraphControl1.IsSynchronizeXAxes = true;就能实现两张Graphpane的轴同步。因此只需控制一个zedGraph就好。高效方便许多。

实验代码如下：

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 OfficeOpenXml;
using OfficeOpenXml.Drawing;
using OfficeOpenXml.Drawing.Chart;
using OfficeOpenXml.Style;
using System.IO;
using ZedGraph;
using System.Threading;

namespace WindowsFormsApplication5
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
        int count = 0;
        private void timer1_Tick(object sender, EventArgs e)
        {

            //zedGraphControl1.GraphPane.XAxis.Scale.MaxAuto = true;

            itime++;
            this.zedGraphControl1.AxisChange();
            this.zedGraphControl1.Refresh();
            this.zedGraphControl2.AxisChange();
            this.zedGraphControl2.Refresh();
            //if (list1 != null)
            //{
            //    if (itime >= 100)
            //    {
            //        zedGraphControl1.GraphPane.XAxis.Scale.Min = (double)itime - 100;
            //        zedGraphControl1.GraphPane.XAxis.Scale.Max = (double)itime;
            //        RefreshGraph(zedGraphControl1);
            //        //zedGraphControl2.GraphPane.XAxis.Scale.Min = (double)itime - 100;
            //        //zedGraphControl2.GraphPane.XAxis.Scale.Max = (double)itime;
            //        //RefreshGraph(zedGraphControl2);
            //    }
            //}
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            initZedGraph(zedGraphControl1);
            Task task = new Task(new Action(sampling));
            task.Start();
        }
        private PointPairList list1 = new PointPairList();  //AD1的点
        private PointPairList list2 = new PointPairList();  //AD2的点
        private PointPairList list3 = new PointPairList();
        private PointPairList list4 = new PointPairList();  //AD1的点
        private PointPairList list5 = new PointPairList();  //AD2的点
        private PointPairList list6 = new PointPairList();

        private PointPairList list7 = new PointPairList();  //AD1的点
        private PointPairList list8= new PointPairList();  //AD2的点
        private PointPairList list9 = new PointPairList();

        private void initZedGraph(ZedGraphControl zedgraph)
        {
            MasterPane master = zedgraph.MasterPane;
            master.Fill = new Fill(Color.White, Color.FromArgb(220, 220, 255), 45.0f);
            master.PaneList.Clear();
            master.Title.IsVisible = true;
            master.Title.Text = "测头调试曲线图";
            master.Margin.All = 10;
            master.InnerPaneGap = 0;
            ColorSymbolRotator rotator = new ColorSymbolRotator();
            for (int j = 0; j < 2; j++)
            {
                GraphPane myPaneT = new GraphPane(new Rectangle(40, 40, 250, 500),
                    "Case #" + (j + 1).ToString(),
                    "时间",
                    "电压");
                //GraphPane myPaneT = new GraphPane(new Rectangle(40, 40, 500, 250),
                //    "Case #" + (j + 1).ToString(),
                //    "时间",
                //    "电压");
                myPaneT.Fill.IsVisible = false;
                myPaneT.Chart.Fill = new Fill(Color.White, Color.SteelBlue, 45.0F);
                myPaneT.BaseDimension = 2.0F;
                myPaneT.XAxis.Title.IsVisible = false;
                myPaneT.XAxis.Scale.IsVisible = false;
                myPaneT.Legend.IsVisible = false;
                myPaneT.Border.IsVisible = false;
                myPaneT.Title.IsVisible = false;

                myPaneT.XAxis.MajorTic.IsOpposite = false;
                myPaneT.XAxis.MinorTic.IsOpposite = false;
                myPaneT.XAxis.MajorTic.IsOutside = false;
                myPaneT.XAxis.MinorTic.IsOutside = false;
                myPaneT.XAxis.MajorGrid.IsVisible = true;
                myPaneT.XAxis.MinorGrid.IsVisible = true;
                myPaneT.XAxis.Scale.Max = 100;
                myPaneT.XAxis.Scale.Min = 0;

                myPaneT.YAxis.Title.Text = "距离(μm)";
                myPaneT.YAxis.Title.FontSpec.Size = 5;
                myPaneT.YAxis.Scale.Max = 3500;
                myPaneT.YAxis.Scale.Min = -3500;
                myPaneT.YAxis.Scale.MajorStep = 1000;
                myPaneT.YAxis.MajorTic.IsOpposite = false;
                myPaneT.YAxis.MinorTic.IsOpposite = false; //小刻度
                myPaneT.YAxis.Scale.Align = AlignP.Inside;

                myPaneT.Y2Axis.Title.Text = "电压值";
                myPaneT.Y2Axis.Title.FontSpec.Size = 5;
                myPaneT.Y2Axis.Scale.Max = 4;
                myPaneT.Y2Axis.Scale.Min = -4;
                myPaneT.Y2Axis.Scale.MajorStep = 1;
                myPaneT.Y2Axis.Scale.FontSpec.FontColor = Color.Black;
                myPaneT.Y2Axis.Title.FontSpec.FontColor = Color.Black;
                myPaneT.Y2Axis.MajorTic.IsOpposite = false;
                myPaneT.Y2Axis.MinorTic.IsOpposite = false;
                myPaneT.Y2Axis.Scale.Align = AlignP.Inside;
                myPaneT.Y2Axis.IsVisible = true;
                myPaneT.Margin.All = 1;       // Graphpane之间的间隔边缘距离

                myPaneT.YAxis.Scale.FontSpec.Size = 4;
                myPaneT.Y2Axis.Scale.FontSpec.Size = 4;
                if (j == 0)
                {
                    myPaneT.Title.Text = "上测头";
                    LineItem Curve1 = myPaneT.AddCurve("电压1", list1, Color.Yellow, SymbolType.None);
                    LineItem Curve2 = myPaneT.AddCurve("电压2", list2, Color.Green, SymbolType.None);
                    LineItem Curve3 = myPaneT.AddCurve("电压3", list3, Color.Red, SymbolType.None);
                    Curve1.IsY2Axis = true;
                    Curve2.IsY2Axis = true;

                }
                if (j == 1)
                {
                    myPaneT.Title.Text = "下测头";
                    LineItem Curve1 = myPaneT.AddCurve("电压1", list4, Color.Yellow, SymbolType.None);
                    LineItem Curve2 = myPaneT.AddCurve("电压2", list5, Color.Green, SymbolType.None);
                    LineItem Curve3 = myPaneT.AddCurve("电压3", list6, Color.Red, SymbolType.None);
                    Curve1.IsY2Axis = true;
                    Curve2.IsY2Axis = true;

                }

                master.Add(myPaneT);
               // zedgraph.MasterPane[0].Chart.Rect = new RectangleF(100, 100, 200, 200);
                zedgraph.AxisChange();
                if (j > 0)
                {
                    myPaneT.YAxis.Scale.IsSkipLastLabel = true;
                    myPaneT.YAxis.Scale.IsSkipLastLabel = true;
                    myPaneT.YAxis.MinSpace = 10;
                    myPaneT.Y2Axis.MinSpace = 10;

                }
            }
            using (Graphics g = zedgraph.CreateGraphics())
            {
                ZedGraphControl z1 = zedgraph;

                master.SetLayout(g, PaneLayout.SingleColumn);
                z1.AxisChange();
                z1.IsAutoScrollRange = true;
                z1.IsShowHScrollBar = true;
                z1.IsShowVScrollBar = true;
                z1.IsSynchronizeXAxes = true;
            }
        }
        long itime = 0;
        private void sampling()
        {

            while (true)
            {
                Random rd = new Random();　　

                //list1.Add((double)itime, rd.Next(1, 4));
                //list2.Add((double)itime, rd.Next(1, 4));
                //list4.Add((double)itime, rd.Next(1, 4));
                //list5.Add((double)itime, rd.Next(1, 4));
                //list3.Add((double)itime, rd.Next(1, 4000));
                //list6.Add((double)itime, rd.Next(1, 4000));

                //if (itime%1000000==0)
                //{
                    list1.Add((double)itime, rd.Next(1, 4));
                    list2.Add((double)itime, rd.Next(1, 4));
                    list4.Add((double)itime, rd.Next(1, 4));
                    list5.Add((double)itime, rd.Next(1, 4));
                    list3.Add((double)itime, rd.Next(1, 4000));
                    list6.Add((double)itime, rd.Next(1, 4000));
                itime++;
                if (itime > 10000)
                {
                    itime = 0;
                    list1.Clear();
                    list2.Clear();
                    list4.Clear();
                    list5.Clear();
                    list3.Clear();
                    list6.Clear();
                }

                if (itime >= 100)
                {
                    Thread.Sleep(1);

                    zedGraphControl1.MasterPane[0].XAxis.Scale.Min = (double)itime - 100;
                    zedGraphControl1.MasterPane[0].XAxis.Scale.Max = (double)itime;
                    zedGraphControl1.MasterPane[1].XAxis.Scale.Min = (double)itime - 100;
                    zedGraphControl1.MasterPane[1].XAxis.Scale.Max = (double)itime;
                    RefreshGraph(zedGraphControl1);
                }

            }
        }
        private delegate void RefreshDelegate();
        private void RefreshGraph(ZedGraphControl zg)
        {
            if (zg == null)
                return;
            //判断是否是非创建控件的线程调用控件
            if (zg.InvokeRequired)
            {
                RefreshDelegate a = new RefreshDelegate(new Action(() => { zg.Invalidate();  }));
                zg.BeginInvoke(a);
            }
            else
            {
                zg.AxisChange();
                zg.Invalidate();
                zg.Refresh();
            }
        }
    }
}

invalidate是收到命令选取合适的时机再刷新

refresh是强制重绘 refresh= invalidate+update

问题： 这里采用的是通常的竖直排列的图表形式。改成水平的话 Graphpane的大小不好控制。改不好 ？？