zedgraph控件使用

ZedGraph 是用于创建任意数据的二维线型、棒型、饼型图表的一个类库，也可以作为 Windows 窗体用户控件和 ASP 网页访问控件。这个类库具有高度的灵活性，几乎所有式样的图表都能够被创建。关于zedgraph控件的使用具体。参考官网介绍：http://www.codeproject.com/Articles/5431/A-flexible-charting-library-for-NET

在项目中遇到的问题总结如下：

一、曲线图基本参数设置：

//标题和x轴、y轴标签

this.zedGraphControl1.GraphPane.Title.Text = "实时曲线图";
this.zedGraphControl1.GraphPane.Title.FontSpec.FontColor = Color.Blue;
this.zedGraphControl1.GraphPane.Title.FontSpec.Size = 30f;

this.zedGraphControl1.GraphPane.XAxis.Title.Text = "时间";
this.zedGraphControl1.GraphPane.XAxis.Title.FontSpec.FontColor = Color.Blue;
this.zedGraphControl1.GraphPane.XAxis.Title.FontSpec.Size = 20f;

this.zedGraphControl1.GraphPane.YAxis.Title.Text = "温度(℃)";
             this.zedGraphControl1.GraphPane.YAxis.Title.FontSpec.FontColor = Color.Blue;
             this.zedGraphControl1.GraphPane.YAxis.Title.FontSpec.Size = 20f;
             //刻度值字体大小、颜色
             this.zedGraphControl1.GraphPane.XAxis.Scale.FontSpec.Size = 20f;
             this.zedGraphControl1.GraphPane.XAxis.Scale.FontSpec.FontColor = Color.Black;

this.zedGraphControl1.GraphPane.YAxis.Scale.FontSpec.Size = 20f;
             this.zedGraphControl1.GraphPane.YAxis.Scale.Min = 0;
             this.zedGraphControl1.GraphPane.YAxis.Scale.Max = 100;
             this.zedGraphControl1.GraphPane.YAxis.Scale.MinorStep = 1;//小步长
             //x轴数据类型
             this.zedGraphControl1.GraphPane.XAxis.Type = ZedGraph.AxisType.DateAsOrdinal;
             this.zedGraphControl1.GraphPane.XAxis.Type = ZedGraph.AxisType.Date;
             this.zedGraphControl1.GraphPane.XAxis.Type = ZedGraph.AxisType.Text;//显示文本
             this.zedGraphControl1.GraphPane.XAxis.Scale.Format = "HH:mm:ss";//时间格式
             //yy-mm-dd HH:mm:ss 其中HH是24小时制 hh是12小时制
             //显示网格线
             this.zedGraphControl1.GraphPane.YAxis.MajorGrid.IsVisible = true;
             this.zedGraphControl1.GraphPane.XAxis.MajorGrid.IsVisible = true;
             //legend图例
             this.zedGraphControl1.GraphPane.Legend.FontSpec.Size = 10f;
             this.zedGraphControl1.GraphPane.Legend.Position = LegendPos.Right;
             //面板填充颜色
             this.zedGraphControl1.GraphPane.Chart.Fill = new Fill(Color.White, Color.LightGray, 45.0f);
            //在面板上添加文本
            TextObj text2 = new TextObj(
                "Zoom: left mouse & drag\nPan: middle mouse & drag\nContext Menu: right mouse",
                0.05f, 0.95f, CoordType.ChartFraction, AlignH.Left, AlignV.Bottom);
            text2.FontSpec.StringAlignment = StringAlignment.Near;
            this.zedGraphControl1.GraphPane.GraphObjList.Add(text2);
            //添加箭头图案
            ArrowObj myArrow = new ArrowObj(Color.Red, 12F, 230F, 70F, 280F, 55F);
            this.zedGraphControl1.GraphPane.GraphObjList.Add(myArrow);
        // get a reference to the GraphPane
        GraphPane myPane =zedGraphControl1.GraphPane;
        // Set the Titles
        myPane.Title.Text = "My Test Graph\n(For CodeProject Sample)";
        myPane.XAxis.Title.Text = "My X Axis";
        myPane.YAxis.Title.Text = "My Y Axis";

//设置图表大小
            this.zedGraphControl1.Location = new Point(10, 10);
            this.zedGraphControl1.Size = new Size(ClientRectangle.Width - 20, ClientRectangle.Height - 20);
二、曲线的实时显示:
            //显示曲线
            list.Add(x,y);//添加数据点
            LineItem mycurve = zedGraphControl1.GraphPane.AddCurve
                 ("温度传感器1", list, Color.Red, SymbolType.Square);
            //LineItem mycurve = zedGraphControl1.GraphPane.AddCurve
            //               ("温度传感器1", null, Ty, Color.Red, SymbolType.Square);
            //this.zedGraphControl1.GraphPane.XAxis.Scale.TextLabels = Tx;
            mycurve.Symbol.Size = 5.0f;//节点图案大小
            mycurve.Line.Width = 2.0F;//线宽
            //在面板上添加文本
            TextObj text = new TextObj(y.ToString("") + "℃",
                x, y*1.02, CoordType.AxisXYScale, AlignH.Center, AlignV.Top);
            text.FontSpec.Size = 15f;
            text.FontSpec.FontColor = Color.Black;
            text.FontSpec.Border.IsVisible = false;
            text.FontSpec.Fill.IsVisible = true;
            text.ZOrder = ZOrder.A_InFront;
            text.FontSpec.Fill = new Fill(Color.FromArgb(240, Color.Snow));
            // Rotate the text to 90 degrees
            //text.FontSpec.Angle = 60;  //字体倾斜度
            this.zedGraphControl1.GraphPane.GraphObjList.Add(text);
            //更新坐标轴
            this.zedGraphControl1.AxisChange();
            //更新图像
            this.zedGraphControl1.Refresh();
            //同时清除该点的值！！注意索引   节点值刷新慢一拍
            if (list.Count >= 9) this.zedGraphControl1.GraphPane.GraphObjList.RemoveAt(1);//删除改点处的文本
            if (list.Count >= 10) list.RemoveAt(0);//大于10个点就删除第一个点
根据上面的设置就可以很容易定制自己的曲线图了。

三、程序参考：

<span style="font-size:14px;"> //标题、标签
this.zedGraphControl1.GraphPane.Title.Text = "实时曲线图";
this.zedGraphControl1.GraphPane.Title.FontSpec.FontColor = Color.Blue;
this.zedGraphControl1.GraphPane.Title.FontSpec.Size = 30f;
this.zedGraphControl1.GraphPane.XAxis.Title.Text = "时间";
this.zedGraphControl1.GraphPane.XAxis.Title.FontSpec.FontColor = Color.Blue;
this.zedGraphControl1.GraphPane.XAxis.Title.FontSpec.Size = 20f;
this.zedGraphControl1.GraphPane.YAxis.Title.Text = "温度(℃)";
this.zedGraphControl1.GraphPane.YAxis.Title.FontSpec.FontColor = Color.Blue;
this.zedGraphControl1.GraphPane.YAxis.Title.FontSpec.Size = 20f;
//this.zedGraphControl1.GraphPane.Chart.Border.Color = Color .White ;
this.zedGraphControl1.GraphPane.Chart.IsRectAuto =true ;
//刻度值字体大小
this.zedGraphControl1.GraphPane.XAxis.Scale.FontSpec.Size = 20f;
this.zedGraphControl1.GraphPane.YAxis.Scale.FontSpec.Size = 20f;
this.zedGraphControl1.GraphPane.YAxis.Scale.Min = 0;
this.zedGraphControl1.GraphPane.YAxis.Scale.Max = 50;
//x轴类型
this.zedGraphControl1.GraphPane.XAxis.Type = ZedGraph.AxisType.Date;
this.zedGraphControl1.GraphPane.XAxis.Scale.Format = "HH:mm:ss";
//显示网格线
this.zedGraphControl1.GraphPane.YAxis.MajorGrid.IsVisible = true;
this.zedGraphControl1.GraphPane.XAxis.MajorGrid.IsVisible = true;
//legend
this.zedGraphControl1.GraphPane.Legend.FontSpec.Size = 10f;
this.zedGraphControl1.GraphPane.Legend.Position = LegendPos.InsideTopRight;
//面板填充颜色
this.zedGraphControl1.GraphPane.Chart.Fill = new Fill(Color.White, Color.LightGray, 45.0f);
//设置窗口大小
SetSize();
//更新画面
this.zedGraphControl1.AxisChange();
this.zedGraphControl1.Refresh();
</span>

定时显示程序：
<span style="font-size:14px;"> private void timer2_Tick(object sender, EventArgs e)
{
this.zedGraphControl1.GraphPane.CurveList.Clear();
//温度曲线1
try
{
y = Convert.ToDouble(Convert.ToInt16(strTempureArry[4]) / 100.00); ;
}
catch
{
return;
}
//存储数据
StoreDataDelegate myStoreDataDelegate = new StoreDataDelegate(StoreData);//实例化委托
myStoreDataDelegate(DateTimeNow, y);//调用委托

list.Add(x, y);
LineItem mycurve = zedGraphControl1.GraphPane.AddCurve
("温度传感器1", list, Color.Red, SymbolType.Circle);
mycurve.Line.Width = 2.0F;//线宽
TextObj textT1 = new TextObj(y.ToString("") + "℃",
x, y*1.02, CoordType.AxisXYScale, AlignH.Center , AlignV.Bottom);
textT1.FontSpec.Size = 10f;
textT1.FontSpec.FontColor = Color.Red;
textT1.FontSpec.Fill.IsVisible = false;
textT1.FontSpec.Border.IsVisible = false;
//textT1.ZOrder = ZOrder.A_InFront;
//textT1.FontSpec.Fill = new Fill(Color.FromArgb(240, Color.Snow));
this.zedGraphControl1.GraphPane.GraphObjList.Add(textT1);

this.zedGraphControl1.AxisChange();
this.zedGraphControl1.Refresh();
//this.zedGraphControl1.Invalidate();
if (list.Count >= 10)
{
list.RemoveAt(0);
//同时清除该点的值
this.zedGraphControl1.GraphPane.GraphObjList.RemoveAt(0);
}

}
</span>

控件大小设置：

private void SetSize()
{
zedGraphControl1.Location = new Point(10, 10);
zedGraphControl1.Size = new Size(ClientRectangle.Width - 100, ClientRectangle.Height - 200);
}

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