C#在zedgraph上绘图

原创于 2020-07-15 16:32:48 发布 · 1.1k 阅读

CC 4.0 BY-SA版权

本文介绍了如何利用C#编程语言结合ZedGraph控件，实现高清晰度、可自由缩放的波形曲线绘制，非常适合于显示和分析各种波形数据。

由于zedgraph控件中绘制的波形曲线为矢量图，能够自由缩放，非常适合绘制波形曲线。

private void DataPro() // 数据处理
{
    try
    {
        int max_x = data_ch1.Count;
        if (max_x % 10 != 0)
        {
            max_x += (10 - (max_x % 10));
        }

        RollingPointPairList list1 = new RollingPointPairList(max_x);
        RollingPointPairList list2 = new RollingPointPairList(max_x);
        RollingPointPairList list3 = new RollingPointPairList(max_x);

        zedGraphControl1.GraphPane.CurveList[0] = zedGraphControl1.GraphPane.AddCurve("通道1", list1, Color.Blue, SymbolType.None);
        zedGraphControl1.GraphPane.CurveList[1] = zedGraphControl1.GraphPane.AddCurve("通道2", list2, Color.Red, SymbolType.None);
        zedGraphControl1.GraphPane.CurveList[2] = zedGraphControl1.GraphPane.AddCurve("通道3", list3, Color.Green, SymbolType.None);

        zedGraphControl1.GraphPane.XAxis.Scale.Min = 0; //X轴最小值0
        zedGraphControl1.GraphPane.XAxis.Scale.Max = max_x; //X轴最大30
        zedGraphControl1.GraphPane.XAxis.Scale.MinorStep = 1;//X轴小步长1,也就是小间隔
        zedGraphControl1.GraphPane.XAxis.Scale.MajorStep = 5;//X轴大步长为5，也就是显示文字的大间隔

        zedGraphControl1.GraphPane.YAxis.Scale.MaxAuto = true; // 根据数值的大小自动设置Y轴最大值
        zedGraphControl1.GraphPane.YAxis.Scale.MinAuto = true; // 根据数值的大小自动设置Y轴最小值

        for (int i = 10; i < data_ch1.Count; i++) // 排除前部异常点
        {
            zedGraphControl1.GraphPane.CurveList[0].AddPoint(i + 1, data_ch1[i]);
            zedGraphControl1.GraphPane.CurveList[1].AddPoint(i + 1, data_ch2[i]);
            zedGraphControl1.GraphPane.CurveList[2].AddPoint(i + 1, data_ch3[i]);
        }

        zedGraphControl1.Refresh();
        zedGraphControl1.RestoreScale(zedGraphControl1.GraphPane);          //恢复默认大小

        if (!checkBox1.Checked)
        {
            label6.Text = 0.ToString(tag);
            zedGraphControl1.GraphPane.CurveList[0].IsVisible = false;
            zedGraphControl1.Refresh();
            zedGraphControl1.RestoreScale(zedGraphControl1.GraphPane);          //恢复默认大小
        }
        
        if (!checkBox2.Checked)
        {
            label7.Text = 0.ToString(tag);
            zedGraphControl1.GraphPane.CurveList[1].IsVisible = false;
            zedGraphControl1.Refresh();
            zedGraphControl1.RestoreScale(zedGraphControl1.GraphPane);          //恢复默认大小
        }

        if (!checkBox3.Checked)
        {
            label8.Text = 0.ToString(tag);
            zedGraphControl1.GraphPane.CurveList[2].IsVisible = false;
            zedGraphControl1.Refresh();
            zedGraphControl1.RestoreScale(zedGraphControl1.GraphPane);          //恢复默认大小
        }
    }
    catch
    {
        
    }
}