How do I stop this loop?

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Salar 2016-7-12

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/294987-how-do-i-stop-this-loop

评论： Salar 2016-7-27

Hello,

I have a simple question, and I really appreciate it if you could please help me. I have a for loop, and I'd like to stop it when my calculated value exceeds a certain number, but my attempts haven't been successful. This is my code:

for i=1:100      
    [ f_YC,fp_YC] = FD_YC( ycI,mu,C );
    [XN,iter]=NR(xn,f_YC,fp_YC);
    xI=XN;
    my = 1./((-xI+(1-mu).*(xI+mu)./((xI+mu).^2+ycI).^(3/2) +mu.*(xI-1+mu)./((xI-1+mu).^2+ycI.^2).^(3/2))./( ycI -ycI.*(1-mu)./((xI+mu).^2+ycI.^2).^(3/2)- ycI.*mu./((xI-1+mu).^2+ycI.^2).^(3/2)));
    X =  my .* ycI + XN;
    if xI > .82;
         break
    end
end

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Azzi Abdelmalek 2016-7-12

What is the problem?

Salar 2016-7-27

I got it solved. Thank you anyways!

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Answer 1

Image Analyst 2016-7-12

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链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/294987-how-do-i-stop-this-loop#answer_228366

That should stop it, if XN ever exceeds 0.82. Apparently it doesn't though. This is the way to find out why: http://blogs.mathworks.com/videos/2012/07/03/debugging-in-matlab/ Perhaps since you don't pass I into any of the arrays or functions in the first two lines, the values never change. Not sure since we don't have those arrays or functions to check them.