Xi=zeros(n,1);
Yi=Xi;
for i=1:n
theta=rand(1,1)*2*pi;%å°±å½è§åº¦thetaæ¯uniformçäºâ¦â¦
rho=randn(1,1)*variance+mu;%é¿åº¦rho~N(mu,variance)ï¼åæ°èªå·±è®¾â¦â¦
%%%%%
%碰å°è´çé¿åº¦æä¹åâ¦â¦
%%%%%
Xi(i,1)=xi(i,1)+rho*cos(theta);
Yi(i,1)=yi(i,1)+rho*sin(theta);
plot([xi(i,1),Xi(i,1)],[yi(i,1),Yi(i,1)],'b')
end
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