Date: Jan 29, 2013 12:32 PM
Author: Bruno Luong
Subject: Re: Generate randomly between -1 and 1

dpb <none@non.net> wrote in message <ke8q86$59q$1@speranza.aioe.org>...

> 
> z=y + sign(rand(size(x))-0.5).*x;

Beaware there is a small chance that rand() returns exactly 0.5, which might create buggy code.

Bruno