How can I define a function within a loop?

Question

Tanvir Kaisar 2017-3-21

0
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https://ww2.mathworks.cn/matlabcentral/answers/331069-how-can-i-define-a-function-within-a-loop

评论： Adam 2017-3-21

Say I want to repeat this user defined function within a loop with , how can I do it? Each time I do it like below I get this message - "Function definition is misplaced or improperly nested."

 r=1;
 while(1)
     function y= myFunc (x)
        y= -(500000*r*x(1));
        r=r+1;
     end
      if (r>10)
       break;
      end
end

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Tanvir Kaisar 2017-3-21

I am sorry where did you show? and I have not asked this question before! :O

Adam 2017-3-21

You seem to be misunderstanding the fundamental difference between defining a function and calling it. You define it once and can call it as many times as you like. I'm sure this is covered in the documentation on functions though to be honest I've never needed to look since I know what a function is and how it works.

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Answer 1

Star Strider 2017-3-21

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https://ww2.mathworks.cn/matlabcentral/answers/331069-how-can-i-define-a-function-within-a-loop#answer_259678

在 MATLAB Online 中打开

There is no need to define your function inside the loop.

Do something like this instead:

r=1;
myFunc = @(x,r) -(500000*r*x(1));               % Anonymous Function
while(1)
    % DEFINE ‘x’ SOMEPLACE
    y = myFunc(x,r)
    r=r+1;
    if (r>10)
        break;
    end
end