How to draw irregular curve using random data ?

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Kushagra Kirtiman 2022-7-23

评论： Matt J 2022-7-23

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

Matt J 2022-7-23

编辑：Matt J 2022-7-23

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

Can you please give me a brief explanation so that I can understand it?

Matt J 2022-7-23

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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