MATLAB: Random Vectors with Fixed Sum (algorithm of Roger Stafford)

Dear Matlab users,

on http://www.mathworks.com/matlabcentral/fileexchange/9700-random-vectors-with-fixed-sum/content/randfixedsum.m, a function is provided by Roger Stafford to randomly and uniformly generate vectors with a specified sum and values in a specified interval.

I would like to use this function in paper, and wonder whether the proposed algorithm/function has previously been described/documented in the literature, so that I can properly cite it. (I tried to directly contact Roger Stafford, but the provided email address no longer exists)

Thank you very much in advance for your response,

Kind Regards, Wim

Best Answer

I would cite the function as a website. Something like this suffices, I think:

R. Stafford (2006). RandfixedSum, Matlab File Exchange #9700, http://www.mathworks.com/matlabcentral/fileexchange/9700

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MATLAB: Help on randfixedsum error

The arguments you use for 'randfixedsum' are rather strange! It is the columns whose sum must be 5 and your columns have only one element, so that element must be 5. There would be nothing randome about it. You could just as well have written:

   repmat(5,1,4)

   5*ones(1,4)

To get a row vector whose sum is 5, take the transpose of a 4 by 1 vector:

   randfixedsum(4,1,5,0,5).'

As to the error message, it looks as though you haven't downloaded that file exchange function properly. Try again. Click on the button that says, "Download Submission".

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