SetSourceData Method
Sets the source data range for the chart.
expression.SetSourceData(Source, PlotBy)
expression Required. An expression that returns a Chart object.
Source Required Range. The range that contains the source data.
PlotBy Optional Variant. Specifies the way the data is to be plotted. Can be either of the following XlRowCol constants: xlColumns or xlRows.
Example
This example sets the source data range for chart one.
Charts(1).SetSourceData Source:=Sheets(1).Range("a1:a10"), _
PlotBy:=xlColumns