[R] error in sample ()

[Silvia Lomascolo]

I am trying to get a random matrix based on an original matrix called
disperser.mx, with dimensions 30x73

When I write the following code:

>scramble = sample (disperser.mx)
>newmat = matrix(scramble, nrow=30)

I get the following warning message and a very weird matrix with 30 rows but
only 3 columns shown below:

Warning message:
data length [73] is not a sub-multiple or multiple of the number of rows
[30] in matrix in: matrix(scramble, nrow = 30)

     [,1]       [,2]       [,3]      
 [1,] Integer,30 Integer,30 Integer,30
 [2,] Integer,30 Integer,30 Integer,30
 [3,] Integer,30 Integer,30 Integer,30
 [4,] Integer,30 Integer,30 Integer,30
 [5,] Integer,30 Integer,30 Integer,30
 [6,] Integer,30 Integer,30 Integer,30
 [7,] Integer,30 Integer,30 Integer,30
 [8,] Integer,30 Integer,30 Integer,30
 [9,] Integer,30 Integer,30 Integer,30
...

Can anyone please help me figure out why I get such a weird result?
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