Draw X-Y data / circle with TFastLineSeries problem
Posted: Tue Jul 24, 2007 7:26 am
Currently I am using TeeChart 7 for Delphi 2007. I have a question about drawing XY data. I use TChart with TFastLineSeries for displaying time dependent data (Y-data, T-Time), but
when I try to draw Y-data, X-data (circle or polygon) the result is wrong. I saw that drawing is done the other way that I had thought. In Delphi common way to draw data is with metods MoveTo, LineTo, and then Point-To-Point but as I saw here is a little bit different.
I tried to draw a circle but the result is different like I expected. I am using method AddXY to put data in series.
eg.
for i:=0 to 100 do
begin
x:=10*sin(2*pi*i/100)
y:=10*cos(2*pi*i/100)
srAB.AddXY(x,y);
end;
When drawing with above code on canvas of any delphi component you get nice circle, but not with TFastLineSeries.
So my question is how to draw a normal circle with TFastLineSeries or just which component should I use or what should I do to achieve drawing of normal circle or polygone?
Thank you very much for your answer
BR
when I try to draw Y-data, X-data (circle or polygon) the result is wrong. I saw that drawing is done the other way that I had thought. In Delphi common way to draw data is with metods MoveTo, LineTo, and then Point-To-Point but as I saw here is a little bit different.
I tried to draw a circle but the result is different like I expected. I am using method AddXY to put data in series.
eg.
for i:=0 to 100 do
begin
x:=10*sin(2*pi*i/100)
y:=10*cos(2*pi*i/100)
srAB.AddXY(x,y);
end;
When drawing with above code on canvas of any delphi component you get nice circle, but not with TFastLineSeries.
So my question is how to draw a normal circle with TFastLineSeries or just which component should I use or what should I do to achieve drawing of normal circle or polygone?
Thank you very much for your answer
BR