how to add a time column to a matrix

a=['07:00:00'; '07:15:00'; '07:30:00'];

% add 60 seconds to 07:00 , 85sec to 07:15 and 136sec to 07:30

add = [60; 85; 136];

sec_per_day = 24*60*60;

Result = datestr(datenum(a, 'HH:MM:SS') + add/sec_per_day, 'HH:MM:SS')

Result =

07:01:00

07:16:25

07:32:16

Now I want to add the Result to matrix ( K )to become the 3rd column K=[34 45; 75 345; 35 65]

How can I do that?

Answer 1

[Walter Roberson]

Result is a string. It is not possible to have strings in a numeric matrix. You need to use cell arrays or table() or dataset()

[zeezo]

thank you

how can I use cell arrays or table() or dataset()?