I just started learning mathlab and I wanted to plot a circle on this figure.. more like a car. please how do i do it.. x=[0,0,1,2,3,4,5,5,0] y=[0,1,1,2,2,1,1,0,0]. Thank you
MATLAB: How to add a circle to this..
centrecirclelearning
Related Solutions
If the center is at (x0,y0) and the radius is r, then
1) if (x-x0)^2 + (y-y0)^2 < r^2, the point (x,y) is inside the circle,2) if (x-x0)^2 + (y-y0)^2 == r^2, the point (x,y) is on the circle, and3) if (x-x0)^2 + (y-y0)^2 > r^2, the point (x,y) is outside the circle.If you have Optimization Toolbox, you can solve this nonlinear least-square problem by simply using lsqnonlin function, like:
load('circle_coordinate.mat');x = circle_coordinate(:,1);y = circle_coordinate(:,2);% Solve as nonlinear least-squares problem
f = @(a) (x-a(1)).^2 + (y-a(2)).^2 - a(3).^2;a0 = [mean(x),mean(y),max(x)-mean(x)]; af = lsqnonlin(f,a0);% Fittig circle
theta = linspace(0,2*pi);xFit = af(1)+af(3)*cos(theta);yFit = af(2)+af(3)*sin(theta);% Visualize the result
figurescatter(x,y,'.')hold onplot(af(1),af(2),'rx')plot(xFit,yFit,'r-')legend({'Data','Center','Fitting circle'})
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