How to add serial number and some other constant values to my output?

I have an output as Text file, which has 9 outputs or 9 columns of data, i want to add serial number or step number for every entry starting from 1 and i want my Torque Field to be '-1' for all the rows and Acquistionrate_HZ to be '10' for all the rows.

Note: number of rows differ every time based on input, PFA output/notepad file

Answer 1

[ANKUR KUMAR]

You can simple add a column at the front of your matrix and use dlmcell to write in a text file.

Suppose A is you cell matrix which contains the data which is in your .txt file.

A={'a','b','c','d','e';'f','g','h','i','j';'k','l','m','n','o';'p','q','r','s','t'}
A =

4×5 cell array

    'a'    'b'    'c'    'd'    'e'
    'f'    'g'    'h'    'i'    'j'
    'k'    'l'    'm'    'n'    'o'
    'p'    'q'    'r'    's'    't'

A=[arrayfun(@(x) num2str(x) ,[-1,1:size(A,1)-1] ,'uni',0)' A]
A =

4×6 cell array

    '-1'    'a'    'b'    'c'    'd'    'e'
    '1'     'f'    'g'    'h'    'i'    'j'
    '2'     'k'    'l'    'm'    'n'    'o'
    '3'     'p'    'q'    'r'    's'    't'