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Randi worked in a program I ran 5 weeks ago, today it doesn't-what gives?

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Dear all,
I had a perfectly-functioning program that used this line:
c = randi([1,n],mn,1)
where n and mn are integers. I've re-opened the program to do a monte carlo simulation, and all I get is an error message stating:
Error using randi
Too many input arguments.
Mind you, I haven't changed a coma in the program. I'm just running it again to re-acquaint myself with had I had done.
Any thoughts?

Accepted Answer

John D'Errico
John D'Errico on 17 Oct 2019
Edited: John D'Errico on 17 Oct 2019
Don't write an m-file that is named randi, at least, if you will ever want to use randi. Try this:
which randi -all
If there is a function named randi that you created, then you did exactly that.
In general, avoid naming functions with existing function names. Check BEFORE you create that file.
  6 Comments
Guillaume
Guillaume on 17 Oct 2019
It appears you're using this toolbox. Delete it or at least remove it from your path since it shadows built-in functions randi and rng and maybe more.
I would also recommend getting in touch with them to complain about that shadowing.

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