Write a 1D matrix to a text file such that only 6 numbers printed in each line

Hello all, I have a long 1D matrix A for example say: A=A[1,2,3,4,5,6,...,21]; I want to write this matrix in to a tab delimited text file in such a way that not more than 6 numbers is printed in each line in the text file:

1 2 3 4 5 6

7 8 9 10 11 12

13 14 15 16 17 18

19 20 21

Could you please help on how to do that in matlab? Thank you.

Answer 1

[Star Strider]

There are probably different ways to do this, but this works:

A = 1:21;                                                                       % Original Data
A1 = {reshape(A(1:6*fix(length(A)/6)), [], 6); A(6*fix(length(A)/6)+1:end)};    % Create Cell Array
filename = 'NewFile.csv';
dlmwrite(filename, A1{1})
dlmwrite(filename, A1{2}, '-append')

type(filename)                                                                  % Proof!

1,4,7,10,13,16
2,5,8,11,14,17
3,6,9,12,15,18
19,20,21