Steema Central

Hi,

I'm reading through a code example provided by Yeray » 03 May 2007 08:44. Here's a piece of that code.

for i := 0 to nSeries-1 do
begin
Chart1.AddSeries(TLineSeries);
Chart1.CustomAxes.Add;
Chart1.CustomVertAxis := Chart1.CustomAxes.Items;
Chart1.CustomAxes.Items.Axis.Color := Chart1.Color;
Chart1.CustomAxes.Items.Grid.Visible := False;
ComboBox2.Items.Add('Series' + inttostr(i + 1));
Chart1.FillSampleValues(20000);
Chart1.CustomAxes.Items.PositionUnits := muPixels;
if ((i+1) mod 2 = 0) then
Chart1.CustomAxes.Items.OtherSide := True;
end;

I'm confused by the array index attached to some of the Chart1 references in that code. I'm clearly missing something because that notation doesn't make any sense to me. The notation Chart1 suggests there is an array of several charts, however, I'm reasonably sure the example was meant to apply to a single instance of a single TChart component. I haven't been able to find anything in the documentation that suggests why this notation is valid. Can you explain what Yeray is up to there?
Thanks!
Brian

Chart1 refers to the series for Chart1.

Thank you for the reply. That's very helpful. I accept that answer although the syntax still doesn't make sense to me. I can't quite picture the underlying structure. It's probably obvious if you study the TeeChart source code - which I don't have. It's enough for my purposes right now to understand what the code does even if I don't know why that particular syntax works. Thanks again.

Hi bfalter,

Using Chart1 is the same as using Chart1.Series. I guess it was made for simplicity since most common objects to be in a chart are series but you can freely use the latter if you prefer.

Hi Narcis,

Thanks for the explanation. Everything makes sense now.

Best regards,
Brian