This is perfectly fine:
Code: Select all
uses Series;
procedure TForm1.FormCreate(Sender: TObject);
var i, j: Integer;
begin
for i:=0 to 4 do
begin
Chart1.AddSeries(TFastLineSeries);
for j:=0 to 9 do
Chart1[i].AddXY(j, random*10);
end;
end;