random matrix

I want to create 2 random matrixes (5x5). One where all the sums of the horizontal axis equal 1 and one where all the vertical axis equal to 1. Any help? Additionally all the random numbers should be ->x>1

Answer 1

[Sean de Wolski]

x1 = rand(5);
x2 = rand(5);
x1 = bsxfun(@rdivide,x1,sum(x1,1));
x2 = bsxfun(@rdivide,x2,sum(x2,2));

[Oleg Komarov]

I would suggest http://www.mathworks.com/matlabcentral/fileexchange/9700-random-vectors-with-fixed-sum since a normalization doesn't guarantee uniformly random sets.