ZedGraph多Y轴编程示例

  
    

   
     [edit] Sample Code 
   
     in
   
      C# 

   
     //
   
      Call this method from the Form_Load method, passing your ZedGraphControl instance
   
     

   
     public
   
      
   
     void
   
      CreateChart( ZedGraphControl zgc )
{
 GraphPane myPane 
   
     =
   
      zgc.GraphPane;

 
   
     //
   
      Set the titles and axis labels
   
     

   
      myPane.Title.Text 
   
     =
   
      
   
     "
   
     Demonstration of Multi Y Graph
   
     "
   
     ;
 myPane.XAxis.Title.Text 
   
     =
   
      
   
     "
   
     Time, s
   
     "
   
     ;
 myPane.YAxis.Title.Text 
   
     =
   
      
   
     "
   
     Velocity, m/s
   
     "
   
     ;
 myPane.Y2Axis.Title.Text 
   
     =
   
      
   
     "
   
     Acceleration, m/s2
   
     "
   
     ;
 
 
   
     //
   
      Make up some data points based on the Sine function
   
     

   
      PointPairList vList 
   
     =
   
      
   
     new
   
      PointPairList();
 PointPairList aList 
   
     =
   
      
   
     new
   
      PointPairList();
 PointPairList dList 
   
     =
   
      
   
     new
   
      PointPairList();
 PointPairList eList 
   
     =
   
      
   
     new
   
      PointPairList();
 
 
   
     //
   
      Fabricate some data values
   
     

   
      
   
     for
   
      ( 
   
     int
   
      i
   
     =
   
     0
   
     ; i
   
     <
   
     30
   
     ; i
   
     ++
   
      )
 {
 
   
     double
   
      time 
   
     =
   
      (
   
     double
   
     ) i;
 
   
     double
   
      acceleration 
   
     =
   
      
   
     2.0
   
     ;
 
   
     double
   
      velocity 
   
     =
   
      acceleration 
   
     *
   
      time;
 
   
     double
   
      distance 
   
     =
   
      acceleration 
   
     *
   
      time 
   
     *
   
      time 
   
     /
   
      
   
     2.0
   
     ;
 
   
     double
   
      energy 
   
     =
   
      
   
     100.0
   
      
   
     *
   
      velocity 
   
     *
   
      velocity 
   
     /
   
      
   
     2.0
   
     ;
 aList.Add( time, acceleration );
 vList.Add( time, velocity );
 eList.Add( time, energy );
 dList.Add( time, distance );
 }
 
 
   
     //
   
      Generate a red curve with diamond symbols, and "Velocity" in the legend
   
     

   
      LineItem myCurve 
   
     =
   
      myPane.AddCurve( 
   
     "
   
     Velocity
   
     "
   
     ,
 vList, Color.Red, SymbolType.Diamond );
 
   
     //
   
      Fill the symbols with white
   
     

   
      myCurve.Symbol.Fill 
   
     =
   
      
   
     new
   
      Fill( Color.White );
 
 
   
     //
   
      Generate a blue curve with circle symbols, and "Acceleration" in the legend
   
     

   
      myCurve 
   
     =
   
      myPane.AddCurve( 
   
     "
   
     Acceleration
   
     "
   
     ,
 aList, Color.Blue, SymbolType.Circle );
 
   
     //
   
      Fill the symbols with white
   
     

   
      myCurve.Symbol.Fill 
   
     =
   
      
   
     new
   
      Fill( Color.White );
 
   
     //
   
      Associate this curve with the Y2 axis
   
     

   
      myCurve.IsY2Axis 
   
     =
   
      
   
     true
   
     ;
 
 
   
     //
   
      Generate a green curve with square symbols, and "Distance" in the legend
   
     

   
      myCurve 
   
     =
   
      myPane.AddCurve( 
   
     "
   
     Distance
   
     "
   
     ,
 dList, Color.Green, SymbolType.Square );
 
   
     //
   
      Fill the symbols with white
   
     

   
      myCurve.Symbol.Fill 
   
     =
   
      
   
     new
   
      Fill( Color.White );
 
   
     //
   
      Associate this curve with the second Y axis
   
     

   
      myCurve.YAxisIndex 
   
     =
   
      
   
     1
   
     ;
 
 
   
     //
   
      Generate a Black curve with triangle symbols, and "Energy" in the legend
   
     

   
      myCurve 
   
     =
   
      myPane.AddCurve( 
   
     "
   
     Energy
   
     "
   
     ,
 eList, Color.Black, SymbolType.Triangle );
 
   
     //
   
      Fill the symbols with white
   
     

   
      myCurve.Symbol.Fill 
   
     =
   
      
   
     new
   
      Fill( Color.White );
 
   
     //
   
      Associate this curve with the Y2 axis
   
     

   
      myCurve.IsY2Axis 
   
     =
   
      
   
     true
   
     ;
 
   
     //
   
      Associate this curve with the second Y2 axis
   
     

   
      myCurve.YAxisIndex 
   
     =
   
      
   
     1
   
     ;
 
 
   
     //
   
      Show the x axis grid
   
     

   
      myPane.XAxis.MajorGrid.IsVisible 
   
     =
   
      
   
     true
   
     ;
 
 
   
     //
   
      Make the Y axis scale red
   
     

   
      myPane.YAxis.Scale.FontSpec.FontColor 
   
     =
   
      Color.Red;
 myPane.YAxis.Title.FontSpec.FontColor 
   
     =
   
      Color.Red;
 
   
     //
   
      turn off the opposite tics so the Y tics don't show up on the Y2 axis
   
     

   
      myPane.YAxis.MajorTic.IsOpposite 
   
     =
   
      
   
     false
   
     ;
 myPane.YAxis.MinorTic.IsOpposite 
   
     =
   
      
   
     false
   
     ;
 
   
     //
   
      Don't display the Y zero line
   
     

   
      myPane.YAxis.MajorGrid.IsZeroLine 
   
     =
   
      
   
     false
   
     ;
 
   
     //
   
      Align the Y axis labels so they are flush to the axis
   
     

   
      myPane.YAxis.Scale.Align 
   
     =
   
      AlignP.Inside;
 myPane.YAxis.Scale.Max 
   
     =
   
      
   
     100
   
     ;
 
 
   
     //
   
      Enable the Y2 axis display
   
     

   
      myPane.Y2Axis.IsVisible 
   
     =
   
      
   
     true
   
     ;
 
   
     //
   
      Make the Y2 axis scale blue
   
     

   
      myPane.Y2Axis.Scale.FontSpec.FontColor 
   
     =
   
      Color.Blue;
 myPane.Y2Axis.Title.FontSpec.FontColor 
   
     =
   
      Color.Blue;
 
   
     //
   
      turn off the opposite tics so the Y2 tics don't show up on the Y axis
   
     

   
      myPane.Y2Axis.MajorTic.IsOpposite 
   
     =
   
      
   
     false
   
     ;
 myPane.Y2Axis.MinorTic.IsOpposite 
   
     =
   
      
   
     false
   
     ;
 
   
     //
   
      Display the Y2 axis grid lines
   
     

   
      myPane.Y2Axis.MajorGrid.IsVisible 
   
     =
   
      
   
     true
   
     ;
 
   
     //
   
      Align the Y2 axis labels so they are flush to the axis
   
     

   
      myPane.Y2Axis.Scale.Align 
   
     =
   
      AlignP.Inside;
 myPane.Y2Axis.Scale.Min 
   
     =
   
      
   
     1.5
   
     ;
 myPane.Y2Axis.Scale.Max 
   
     =
   
      
   
     3
   
     ;
 
 
   
     //
   
      Create a second Y Axis, green
   
     

   
      YAxis yAxis3 
   
     =
   
      
   
     new
   
      YAxis( 
   
     "
   
     Distance, m
   
     "
   
      );
 myPane.YAxisList.Add( yAxis3 );
 yAxis3.Scale.FontSpec.FontColor 
   
     =
   
      Color.Green;
 yAxis3.Title.FontSpec.FontColor 
   
     =
   
      Color.Green;
 yAxis3.Color 
   
     =
   
      Color.Green;
 
   
     //
   
      turn off the opposite tics so the Y2 tics don't show up on the Y axis
   
     

   
      yAxis3.MajorTic.IsInside 
   
     =
   
      
   
     false
   
     ;
 yAxis3.MinorTic.IsInside 
   
     =
   
      
   
     false
   
     ;
 yAxis3.MajorTic.IsOpposite 
   
     =
   
      
   
     false
   
     ;
 yAxis3.MinorTic.IsOpposite 
   
     =
   
      
   
     false
   
     ;
 
   
     //
   
      Align the Y2 axis labels so they are flush to the axis
   
     

   
      yAxis3.Scale.Align 
   
     =
   
      AlignP.Inside;
 
 Y2Axis yAxis4 
   
     =
   
      
   
     new
   
      Y2Axis( 
   
     "
   
     Energy
   
     "
   
      );
 yAxis4.IsVisible 
   
     =
   
      
   
     true
   
     ;
 myPane.Y2AxisList.Add( yAxis4 );
 
   
     //
   
      turn off the opposite tics so the Y2 tics don't show up on the Y axis
   
     

   
      yAxis4.MajorTic.IsInside 
   
     =
   
      
   
     false
   
     ;
 yAxis4.MinorTic.IsInside 
   
     =
   
      
   
     false
   
     ;
 yAxis4.MajorTic.IsOpposite 
   
     =
   
      
   
     false
   
     ;
 yAxis4.MinorTic.IsOpposite 
   
     =
   
      
   
     false
   
     ;
 
   
     //
   
      Align the Y2 axis labels so they are flush to the axis
   
     

   
      yAxis4.Scale.Align 
   
     =
   
      AlignP.Inside;
 yAxis4.Type 
   
     =
   
      AxisType.Log;
 yAxis4.Scale.Min 
   
     =
   
      
   
     100
   
     ;
 
 
   
     //
   
      Fill the axis background with a gradient
   
     

   
      myPane.Chart.Fill 
   
     =
   
      
   
     new
   
      Fill( Color.White, Color.LightGoldenrodYellow, 
   
     45.0f
   
      );
 
 zgc.AxisChange();
}