Question

How to export a matrix with the first row telling names of columns

like

A=
1   2  3  4
5   6  7  8
9  10 11 12
13 14 15 16 

export to matrix.txt

x1  x2 x3 x4
1   2  3  4
5   6  7  8
9  10 11 12
13 14 15 16

I was checking

dlmwrite('matrix.txt',A,'delimiter',',');

But how to modify it?

Answer 1

Use the ‘-append’ option:

dlmwrite('matrix.txt', {'a','b','c'});
dlmwrite('matrix.txt', [1,2,3;4,5,6], '-append');