Steema Central

Posted: **Wed Jun 23, 2010 11:00 am**

I can't figure out how to read the calculated values from a histogram. The following would loop through each bin

for( int j = 0; j < dynamic_cast< THistogramFunction * >( c -> Series[ 1 ] -> FunctionType ) -> NumBins; j ++ )
   ?????;

but how do i now read the function's values using index j? In ChartEditor, the desired column is headed 'Bar' when viewing the series.

Posted: **Wed Jun 23, 2010 11:52 am**

Hi philip,

You can retrieve function series values, for example:

  for i:=0 to (Chart1[1].FunctionType as THistogramFunction).NumBins -1 do
  begin
    BinVal:=Chart1[1].YValue[i];
  end;

Code below does the same but is simpler:

  for i:=0 to Chart1[1].Count -1 do
  begin
    BinVal:=Chart1[1].YValue[i];
  end;

Hope this helps!

reading values from THistogramFunction