Steema Central

Posted: **Wed May 12, 2010 11:28 am**

Hello.

I'm playing with the VCL 2010 demo and I've found a weird behaviour of the Smooth function. It works properly if I define all series and smooth functions (related to those series) using the "Edit chart" option. But if I define series and functions at my source code (exactly the same series and properties as I did before), the smooth functions are not smooth at all. They follow the reference series, but have big deviations (see the attached file, please).

: SmoothFunction.jpg (206.24 KiB) Viewed 6201 times

Is this fixed at the release version?, because we were planning to upgrade to use it.

Thanks in advance,
María

Posted: **Wed May 12, 2010 1:06 pm**

Forgot to mention... I'm using C++Builder 2010 and Windows 7.

Posted: **Wed May 12, 2010 4:15 pm**

Hi Maria,

I can see that having some points very near in XValue (in comparison with the other points proximity) the smoothed seems to give an strange behaviour.

Delphi example:

Code: Select all

uses Series, TeeSpline;

var Series1, Series2: TLineSeries;
    TeeFunction1: TSmoothingFunction;

procedure TForm1.FormCreate(Sender: TObject);
begin
  Chart1.View3D:=false;

  Series1:=Chart1.AddSeries(TLineSeries.Create(self)) as TLineSeries;
  Series1.AddXY(0,100);
  Series1.AddXY(100,130);
  Series1.AddXY(100.25,105);
  Series1.AddXY(200,155);

  Series2:=Chart1.AddSeries(TLineSeries.Create(self)) as TLineSeries;
  TeeFunction1:= TSmoothingFunction.Create(self);
  Series2.SetFunction(TeeFunction1);
  Series2.DataSource:=Series1;
end;

I've added it to the defect list to be revised in future releases (TV52014879).

Posted: **Tue Aug 31, 2010 5:06 pm**

Have we found a solution for this issue yet? I'm encountering the same problem...

Posted: **Wed Sep 01, 2010 4:25 pm**

Hi,

I'm afraid not yet. I've incremented it's priority.

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