C# C中具有多个点的ZedGraph堆叠条形图#

我的配置文件如下所示：

Item|Size|Directory|Data  
A|12|D_01|11/28/10  
C|13|D_01|11/28/10  
B|12|D_01|11/28/10  
Back|122|D_02|11/28/10  
Body|112|D_02|11/28/10  
A|12|D_01|11/29/10  
C|13|D_01|11/29/10  
B|12|D_01|11/29/10  
Back|122|D_01|11/29/10  
Body|112|D_01|11/29/10  
Arm|20|D_01|11/29/10  

我的x轴是date，这一点我没有问题，如果我只有一个静态数量的实例来组成Y轴，我会很好，但是我如何创建一个单独的堆叠条形图来自动为每个目录的每个项目标记点呢

因此，堆叠条1将是A.B.C、身体、背部、手臂，示例显示在29上，我添加了一个手臂项目。28号的1号横杆有5个点，29号的2号横杆有6个点

我希望这是有道理的。。 我不需要任何帮助，只需要如何正确显示栏。

问题中不清楚目录会如何影响数据的显示，因此，假设只需要两个栏（两个日期各1个），下面是一个示例。有两种方法可以格式化日期轴并处理空数据：使用AxisType.date=DateAsOrdinal并为数据为空的日期添加零值，或者[2]使用AxisType.date=date并不对数据为空的日期添加值。如果存在空数据，DateAsOrdinal似乎会将数据应用到错误的日期—这似乎是一个错误，或者至少是不直观的。该示例使用AxisType.Date=Date方法，这需要对日期轴进行额外的格式化

     using ZedGraph;

     ...

     GraphPane myPane = zg1.GraphPane; // zg1 is a ZedGraph control.

     // Set the title and axis label
     myPane.Title.Text = "Stacked Bar, ZedGraph ver 5.1.5.28844";
     myPane.YAxis.Title.Text = "Value";

     // Create two dates.
     XDate date1 = new XDate(2010, 11, 28); // First date.
     XDate date2 = new XDate(2010, 11, 29); // Second date.

     // Create data lists and bars for A, B, C, Back, Body and Arm (6 total).

     ZedGraph.PointPairList listA = new ZedGraph.PointPairList();
     listA.Add( date1, 12 );
     listA.Add( date2, 13);

     BarItem barA = zg1.GraphPane.AddBar("A", listA, Color.Red );
     barA.Bar.Fill = new Fill( Color.Red );

     ZedGraph.PointPairList listB = new ZedGraph.PointPairList();
     listB.Add(date1, 12);
     listB.Add(date2, 12);

     BarItem barB = zg1.GraphPane.AddBar("B", listB, Color.Blue);
     barB.Bar.Fill = new Fill(Color.Blue);

     ZedGraph.PointPairList listC = new ZedGraph.PointPairList();
     listC.Add(date1, 13);
     listC.Add(date2, 12);

     BarItem barC = zg1.GraphPane.AddBar("C", listC, Color.Green);
     barC.Bar.Fill = new Fill(Color.Green);

     ZedGraph.PointPairList listBack = new ZedGraph.PointPairList();
     listBack.Add(date1, 122);
     listBack.Add(date2, 122);
     BarItem barBack = zg1.GraphPane.AddBar("Back", listBack, Color.Red);
     barBack.Bar.Fill = new Fill(Color.Red, Color.White, Color.Red);

     ZedGraph.PointPairList listBody = new ZedGraph.PointPairList();
     listBody.Add(date1, 112);
     listBody.Add(date2, 112);
     BarItem barBody = zg1.GraphPane.AddBar("Body", listBody, Color.Blue);
     barBody.Bar.Fill = new Fill(Color.Blue, Color.White, Color.Blue);

     ZedGraph.PointPairList listArm = new ZedGraph.PointPairList();
     // listArm.Add(date1, 0); // Not needed for XAxis.Type = AxisType.Date.
     listArm.Add(date2, 20);
     BarItem barArm = zg1.GraphPane.AddBar("Arm", listArm, Color.Green);
     barArm.Bar.Fill = new Fill(Color.Green, Color.White, Color.Green);

     // Done creating bars.

     myPane.BarSettings.Type = BarType.Stack;  // stacks bar rather than side-by-side.
     myPane.BarSettings.ClusterScaleWidth = 1; // Widen bars somewhat.

     // Format the X axis.
     XAxis x = myPane.XAxis;

     x.Type = AxisType.Date;
     x.Scale.Format = "yyyy-mm-dd";
     x.Scale.BaseTic = date1; // Puts the first major tic at the first date.
     x.Scale.Min = date1 - 0.5; // Manually set the left of the graph window just prior to the first date.
     x.Scale.Max = date2 + 0.5; // Manually set the right of the graph window just after the last date.

     // Setting the step size...
     // Isn't required if AxisType.Date is DateAsOrdinal.
     // Docs says that MinorStep is ignore for AxisType.Date but seems inaccurate.
     // Step value of 24 was derived by trial and error. Seems it should be 1 if Unit = DateUnit.Day.
     // A value of 24 implies that the Units are acting like DateUnit.Hour.
     x.Scale.MajorUnit = DateUnit.Day; 
     x.Scale.MinorUnit = DateUnit.Day;
     x.Scale.MinorStep = 24; 
     x.Scale.MajorStep = 24;

     zg1.AxisChange(); // Update graph.

问题中不清楚目录会如何影响数据的显示，因此，假设只需要两个栏（两个日期各1个），下面是一个示例。有两种方法可以格式化日期轴并处理空数据：使用AxisType.date=DateAsOrdinal并为数据为空的日期添加零值，或者[2]使用AxisType.date=date并不对数据为空的日期添加值。如果存在空数据，DateAsOrdinal似乎会将数据应用到错误的日期—这似乎是一个错误，或者至少是不直观的。该示例使用AxisType.Date=Date方法，这需要对日期轴进行额外的格式化

     using ZedGraph;

     ...

     GraphPane myPane = zg1.GraphPane; // zg1 is a ZedGraph control.

     // Set the title and axis label
     myPane.Title.Text = "Stacked Bar, ZedGraph ver 5.1.5.28844";
     myPane.YAxis.Title.Text = "Value";

     // Create two dates.
     XDate date1 = new XDate(2010, 11, 28); // First date.
     XDate date2 = new XDate(2010, 11, 29); // Second date.

     // Create data lists and bars for A, B, C, Back, Body and Arm (6 total).

     ZedGraph.PointPairList listA = new ZedGraph.PointPairList();
     listA.Add( date1, 12 );
     listA.Add( date2, 13);

     BarItem barA = zg1.GraphPane.AddBar("A", listA, Color.Red );
     barA.Bar.Fill = new Fill( Color.Red );

     ZedGraph.PointPairList listB = new ZedGraph.PointPairList();
     listB.Add(date1, 12);
     listB.Add(date2, 12);

     BarItem barB = zg1.GraphPane.AddBar("B", listB, Color.Blue);
     barB.Bar.Fill = new Fill(Color.Blue);

     ZedGraph.PointPairList listC = new ZedGraph.PointPairList();
     listC.Add(date1, 13);
     listC.Add(date2, 12);

     BarItem barC = zg1.GraphPane.AddBar("C", listC, Color.Green);
     barC.Bar.Fill = new Fill(Color.Green);

     ZedGraph.PointPairList listBack = new ZedGraph.PointPairList();
     listBack.Add(date1, 122);
     listBack.Add(date2, 122);
     BarItem barBack = zg1.GraphPane.AddBar("Back", listBack, Color.Red);
     barBack.Bar.Fill = new Fill(Color.Red, Color.White, Color.Red);

     ZedGraph.PointPairList listBody = new ZedGraph.PointPairList();
     listBody.Add(date1, 112);
     listBody.Add(date2, 112);
     BarItem barBody = zg1.GraphPane.AddBar("Body", listBody, Color.Blue);
     barBody.Bar.Fill = new Fill(Color.Blue, Color.White, Color.Blue);

     ZedGraph.PointPairList listArm = new ZedGraph.PointPairList();
     // listArm.Add(date1, 0); // Not needed for XAxis.Type = AxisType.Date.
     listArm.Add(date2, 20);
     BarItem barArm = zg1.GraphPane.AddBar("Arm", listArm, Color.Green);
     barArm.Bar.Fill = new Fill(Color.Green, Color.White, Color.Green);

     // Done creating bars.

     myPane.BarSettings.Type = BarType.Stack;  // stacks bar rather than side-by-side.
     myPane.BarSettings.ClusterScaleWidth = 1; // Widen bars somewhat.

     // Format the X axis.
     XAxis x = myPane.XAxis;

     x.Type = AxisType.Date;
     x.Scale.Format = "yyyy-mm-dd";
     x.Scale.BaseTic = date1; // Puts the first major tic at the first date.
     x.Scale.Min = date1 - 0.5; // Manually set the left of the graph window just prior to the first date.
     x.Scale.Max = date2 + 0.5; // Manually set the right of the graph window just after the last date.

     // Setting the step size...
     // Isn't required if AxisType.Date is DateAsOrdinal.
     // Docs says that MinorStep is ignore for AxisType.Date but seems inaccurate.
     // Step value of 24 was derived by trial and error. Seems it should be 1 if Unit = DateUnit.Day.
     // A value of 24 implies that the Units are acting like DateUnit.Hour.
     x.Scale.MajorUnit = DateUnit.Day; 
     x.Scale.MinorUnit = DateUnit.Day;
     x.Scale.MinorStep = 24; 
     x.Scale.MajorStep = 24;

     zg1.AxisChange(); // Update graph.