Scale Matrix Dimensions by Factor

I have a matrix that needs to be scaled in the horizontal, copying each row.

Ex:

[1 2 3]

[4 5 6]

Scale Columns only by Factor 3

[1 1 1 2 2 2 3 3 3]

[4 4 4 5 5 5 6 6 6]

How can I write a simple loop to perform this. Thanks!

Answer 1

[Bruno Luong]

>> repelem([1 2 3],3)

ans =

     1     1     1     2     2     2     3     3     3

>> 

[Philip]

I think that repeats in columns and rows though? I need to repeat columns, keep same number of rows.

[Bruno Luong]

1 x 3 matrix in 1 x 9 matrix out, repeats rows you said?

[Bruno Luong]

I think I understand now your incorrect MATLAB notation

>> repelem([1 2 3; 4 5 6],1,3)

ans =

     1     1     1     2     2     2     3     3     3
     4     4     4     5     5     5     6     6     6

>> 

[Philip]

Thanks!