How do I create a column vector of random numbers between -40 and 40, with "n" entries?

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Anna Blakley 2016-10-26

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https://ww2.mathworks.cn/matlabcentral/answers/309348-how-do-i-create-a-column-vector-of-random-numbers-between-40-and-40-with-n-entries

评论： Image Analyst 2023-5-18

I know rand returns random values between 0 and 1 and randi returns random integers, but how do I create a column vector with random numbers within a certain range?

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Amit A 2023-5-18

how to create a column vector named srcBits containing 20,000 randomly-generated bits.

Image Analyst 2023-5-18

@Amit A, start your own question in a new thread, and there say how many elements you want in the vector and how many bits are in each number/element of the vector.

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Answer 1

Walter Roberson 2016-10-26

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randi([-40,40],n,1)

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Anna Blakley 2016-10-26

Thank you!

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Answer 2

Star Strider 2016-10-26

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在 MATLAB Online 中打开

If you want random floating-point numbers:

n = 1000;                                                   % Pick A Number
rv = 80*rand(n,1)-40;                                       % Vector Of Random Floating-Point Numbers
figure(1)
hist(rv,50)                                                 % Check Result (Optional)