Adding a column to a datafile

How to I add a column to a data text file?

[madhan ravi]

where is your file?

Answer 1

[Star Strider]

Try this:

datafile = [3750 555 10266
            3750 555 0
            3750 555 0
            3750 555 0
            3750 555 0
            3750 555 0
            3750 555 0
            3750 555 0
            3750 555 0];
        
new_datafile = [datafile (0:0.01:((size(datafile,1)-1)*0.01))']

producing:

new_datafile =
         3750          555        10266            0
         3750          555            0         0.01
         3750          555            0         0.02
         3750          555            0         0.03
         3750          555            0         0.04
         3750          555            0         0.05
         3750          555            0         0.06
         3750          555            0         0.07
         3750          555            0         0.08  

I just used a section of your file here to demonstrate my code. It will work on your entire file.