how to randomly vary 2 numbers?
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Hi! I want to generate a column of 30 randomly varying -1s and 1s. How can I do that? I was trying randi([-1:2:1],30,1) but that gives me zeros too and I don't want zeros, only -1 and 1. Thanks
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Accepted Answer
John Petersen
on 5 Jul 2012
x = 2*round(rand(30,1)) - 1;
3 Comments
John Petersen
on 5 Jul 2012
Edited: John Petersen
on 5 Jul 2012
No it doesn't. Maybe you didn't grab the whole line?
More Answers (2)
Andrei Bobrov
on 5 Jul 2012
Edited: Andrei Bobrov
on 5 Jul 2012
eg
A = (rand(5) > .5) + 0;
A(~A) = -1;
or
A = 2*randi([0 1],30,1) - 1;
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