sample(a,n)
Returns an array of size n after sampling array a.
sample(a,n,m)
Returns a matrix with n rows and m columns. Each column is a sample of array a.
See also variate frequencies probabilities
Example
a = ( 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 );
sample( a, 4 )
2.0 4.0 9.0