Re: create matrix with all possible combinations

[Ben Abbott]

On Nov 2, 2009, at 7:43 PM, xeon wrote:

> Hi,
>
> I would like to create a matrix with 8 columns with all possible
> combinations with the values 0 and 1 in Octave.
>
> For example,
> [0,0,0,0,0,0,0,0;1,0,0,0,0,0,0,0;0,1,0,0,0,0,0,0;...;1,1,1,1,1,1,1,1];
>
> How can I do that?
>
> thanks,

The may be a better way, but you can accomplish what you want by ...

        n = 8;
        a = dec2bin ([0:2^n-1], n);
        b = num2cell (a(:), 2);
        c = cellfun (@(x) eval(x), b);
        d = reshape (c, [2^n, n])

Ben