Nxn matrix with elements between 1...n^2

Hi everyone. I have to do a nxn matrix, whose elements are natural numbers between 1...n^2. For example, if n=3 the matrix will be:

[1 2 3; 4 5 6; 7 8 9]

Also, I have to be able to order the matrix by rows or columns.

Of course, thanks. I'm just starting with the Matlab world and it's not easy lol.

Answer 1

[Chad Greene]

Here's one way:

n = 3; 

% Create a 1D array of all the values: 
m = 1:n^2; 

% Reshape m into nxn: 
m = reshape(m,n,n)

[Facundo Beer]

Thanks a lot! Now, with this method matlab orders the matrix by columns. How could I order it by rows?

[James Tursa]

m = m';

[Chad Greene]

Ah, oops! Thanks James.