count rows from column file and store in a new column

someone could help me to see how to make a column that increases in numbers according to the number of entries from a column file?

I have this matrix: A = [1,2,3,4,5 ; 5,5,5,5,5; 5,5,5,5,5; 5,5,5,5,5; 5,5,5,5,5 ] and i want to add new column with number of each file.

and add this column to an existing file .

Answer 1

[Ameer Hamza]

If both matrices have the same number of rows, then you can combine them using concatenation brackets ([]). For example

A = [1,2,3,4,5 ; 5,5,5,5,5; 5,5,5,5,5; 5,5,5,5,5; 5,5,5,5,5 ];
B = rand(5, 10); % random matrix
C = [A B] % join A and B