Subscripted assignment dimension mismatch.

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Marcus 2015-2-26

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https://ww2.mathworks.cn/matlabcentral/answers/180629-subscripted-assignment-dimension-mismatch

回答： Star Strider 2015-2-26

Hello, I'm getting the error 'Subscripted assignment dimension mismatch.' for this piece of code:

    a = -3;
    b = 3;
    M = 10^(5);
    nrs = a + (b-a)*rand(2*M,1);
    rng(:,1) = (nrs(1:length(nrs)/2));
    rng(:,2) = (nrs(length(nrs)/2:end-1));

Could anyone help me to figure out what is wrong and how to fix it? Thank you very much.

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Answer 1

Star Strider 2015-2-26

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Your code as you posted it runs for me without error. Check to be sure you haven’t defined ‘rng’ earlier in your code.

Also, rng is a built-in MATLAB function, and you are ‘overshadowing’ it by naming your variable the same. Rename your variable something else, like ‘nrs_rng’.