How to draw a closed curve with Tchart?

zzxha0809

After the abscissa is set, how to draw a curve back and forth on tchart? Or use other controls

tonnywoo

Assign a set of values:
 chart1.Series [0] .Clear;
       for i: = 1 to j do
    begin
chart1.Series [0] .AddXY (a [i], b [i]);
    end;

To draw a closed curve, just let A [1] = A [J], B [1] = B [J].

zzxha0809

No, I don't mean numerically closed, I mean that the graph is closed, just like drawing a circle.

zzxha0809

Already resolved. Thank you also

tonnywoo

Am I writing it wrong, how did you do it?