The two methods that convert either data coordinates or data indices into pixel coordinates are the DataIndexToCoord and DataCoordToCoord methods of the ChartGroup object. The DataIndexToCoord method takes a series and point index and returns the client coordinates of the specified data point. The DataCoordToCoord method takes a set of data coordinates and returns a pixel coordinate. These methods are quite similar to the other conversion methods.

DataIndexToCoord Method

The DataIndexToCoord method takes four parameters, and returns a pixel coordinate as seen in the following example:

To write code in Visual Basic

           
Dim CoordX, CoordY As Integer     
C1Chart1.ChartGroups.Group0.
  DataIndexToCoord(ChartSeries, ChartPoint, CoordX, CoordY)    
Debug.WriteLine("X Chart Coordinate: " & CoordX.ToString())    
Debug.WriteLine("Y Chart Coordinate: " & CoordY.ToString())

To write code in C#

          
int CoordX=0, CoordY=0;    
c1Chart1.ChartGroups.Group0.
   DataIndexToCoord(ChartSeries, ChartPoint, ref CoordX, ref CoordY);  
Debug.Writeline("X Chart Coordinate: " + CoordX.ToString());   
Debug.Writeline("Y Chart Coordinate: " + CoordY.ToString());

DataCoordToCoord Method

The DataCoordToCoord method takes four parameters, and returns a pixel coordinate as seen in the following example:

To write code in Visual Basic

           
Dim CoordX, CoordY As Integer       
C1Chart1.ChartGroups.Group0._   
   DataCoordToCoord(DataCordX, DataCoordY, CoordX, CoordY)    
Debug.WriteLine("X Chart Coordinate: " & CoordX.ToString())   
Debug.WriteLine("Y Chart Coordinate: " & CoordY.ToString())

To write code in C#

          
int CoordX=0, CoordY=0;      
c1Chart1.ChartGroups.Group0.  
   DataCoordToCoord(DataCordX, DataCoordY, ref CoordX, ref CoordY);    
ConsoleDebug.Writeline("X Chart Coordinate: " + CoordX.ToString());    
ConsoleDebug.Writeline("Y Chart Coordinate: " + CoordY.ToString());