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Christian Volz · Guest

Hello,

perhaps someone can help me with this TChart component (shipped with
Delphi2005).
All i want to do is drawing a pie chart which is a true circle (and no
ellipse!). The TChart component has two properties i can adjust
- circled := true
- CustomXRadius :=
CustomYRadius :=

But even when i set all these properties i do not get the desired
result. The pie is drawn "like" a circle, but it is no EXACT circle
(the ratio x-radius / y-radius is about 1.1 but must be in my program
exactly 1.0).

Is this just some sort of bug or am I missing something important ?

Best wishes,

Chrisitan

Narcís Calvet · Guest

Hi Christian,

Do you have your chart set to 3D view? The ratio is 1.0 here using the code
below:

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

Series1.FillSampleValues(5);
Series1.Circled:=true;
end;

--
Best Regards,

Narcís Calvet
http://support.steema.com

"Important note: If you are a TeeChart registered customer, please post your
support questions at Steema's Support monitored Forums for customers:
http://support.steema.com for a prompter reply."

"Christian Volz" <mail@christian-volz.de> wrote in message
news:43e86457$1 (AT) newsgroups (DOT) borland.com...

Christian Volz · Guest

Hello Narcis,

thanks a lot for your response. No, i do not have set the 3D view. I think you determined the ratio 1.0 using the TChart properties xradius, yradius ? I get the same results with these properties, but actually the pie chart seems not to be a true circle.

When i use the following code

procedure TForm1.FormCreate(Sender: TObject);
var
Series1: TPieSeries;
begin
Chart1.View3D:=false;
Series1 := TPieSeries.Create(self);
Series1.FillSampleValues(5);
Series1.Circled:=true;
Chart1.AddSeries(Series1);
Chart1.Print;
end;

I get a very squeezed pie chart as print.
Adding the lines

Series1.CustomXRadius := 100;
Series1.CustomYRadius := 100;

I get a better result, but still a ellipse.

(In this example the pie chart on the screen seems to be a true circle, but i think i had also examples where this was not the case).

Best regards,

Christian

"Narcís Calvet" <support (AT) steema (DOT) com> wrote: