Prev: DMT model in Simulink
Next: Callling libmx APIs from a standalone C++ program
From: ImageAnalyst on 28 Jan 2010 14:40
Well you said they represent probabilities so I assume they'll all be
between 0 and 1.
Try this code:

randomNumbers = rand(1,6)
sumOfNumbers = sum(randomNumbers)
normalizedRandomNumbers = randomNumbers / sumOfNumbers

Regardless, this code will work no matter what the range of the
numbers is.

Now whether they're still "random" is a question for the
mathematicians, since if you take any 5 of them, then the 6th one is
determined (not random) since you're requiring that they all sum to 1,
so perhaps it's not really random anymore.
From: Johnson on 3 Feb 2010 21:16
"HollyandIvy He" <charon13y(a)googlemail.com> wrote in message <hjsi1q$bjc$1(a)fred.mathworks.com>...
> I don't know if this is possible. What I'm trying is to produce a row vector contain 6 random values presenting probability, thus the sum should be equal to 1.

Scroll down to "Simplex Point Picking". I saw a MATLAB Central posting on this once but I think implementing the method on the wiki page below is pretty feasible.

http://en.wikipedia.org/wiki/Simplex
First  |  Prev  | 
Pages: 1 2
Prev: DMT model in Simulink
Next: Callling libmx APIs from a standalone C++ program