MATLAB: How to recenter a circle

recenter circle

I am trying to fit experimental data of a gear 2D measurement.
I fit external diameter with the the function circfit so that I get external radius value and real center (x,y) of the these coordinates.
Now, I would like to move this data into a centered circle in (0,0). How can I do this?
Thank you very much for your help!

Best Answer

If you know Radius and center of circle, you can draw using:
R = 2. ;  % say R is 2 
C = [0. 0.] ;   % Let center be origin 
th = linspace(0,2*pi) ; 
x = R*cos(th) ; y = R*sin(th) ; 
xc = C(1)+x ;
yc = C(2)+y ;
plot(xc,yc) ;
As you know Radius, you can follow the above steps.
If you want to shift the center, from the circle coordinates, subtract the center, the circle will be centered at origin.
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