How to draw irregular curve using random data ?
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How to draw irregular Circle/ Curve in MATLAB with radius(i.e 5) varying from +- 1
For example I have to make something like this![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/1074810/image.png)
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/1074810/image.png)
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Matt J
le 23 Juil 2022
Modifié(e) : Matt J
le 23 Juil 2022
t=pi/180*(0:10:360);
r=5+0.5*(rand(size(t))*2-1);
r(end)=r(1);
tq=linspace(t(1),t(end),1000);
rq=spline(t,[0,r,0],tq);
[x,y]=pol2cart(tq, rq);
plot(x,y); axis equal
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Matt J
le 23 Juil 2022
It starts with polar coordinates t,r where r =5 +/- random perturbation.
Then spline() is used to interpolate smoothly between them.
Then pol2cart() is used to convert to Cartesian x,y coordinates which are plotted as usual.
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