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From: Jos (10584) on 18 Mar 2010 09:01
"Christiaan " <chradem(a)hotmail.com> wrote in message <hnt1o9$2vl$1(a)fred.mathworks.com>...
> I would like to create a vector [1x 200] which contains the values 1 and 0. The amount of ones is depending on a certain preset percentage and is randomly distrubuted over this vector. What is the best way to create such a vector?
>
>

Take a look at the my quite simple engine NTRUE:
http://www.mathworks.com/matlabcentral/fileexchange/10924-ntrue

sizeM = [5 5] ; % size of matrix
perc = 48 ; % percentage of true values (ones)

% engine
N = round(perc / 100 * prod(sizeM)) ; % number of true values
M = ntrue(N, sizeM)

% test
sum(M(:)) ./ numel(M)

Approaches using something like "random values smaller then threshold" are not bound ot give you an exact number of true (one) values ...

hth
Jos
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