how to calculate time in matlab

Hi, how can I write a time in matlab and add minutes to it. For example: how to write a time into the matrix a=[7:00 7:15 7:30] and how to add 60 seconds to 7:00 , 85sec to 7:15 and 136sec to 7:30

Thanks

Answer 1

[Star Strider]

This will work in R2013b:

a=['7:00'; '7:15'; '7:30'];
% How to add 60 seconds to 7:00 , 85sec to 7:15 and 136sec to 7:30
add = [60; 85; 136];
sec_per_day = 24*60*60;
Result = datestr(datenum(a, 'HH:MM') + add/sec_per_day, 'HH:MM:SS')

Result =

07:01:00
07:16:25
07:32:16

[zeezo]

Thank you very much. It works perfectly.

[Star Strider]

My pleasure.

[zeezo]

% Now I want to calculate the time different in a second between first result and the second result (example between 07:32:16 and 07:16:25)?

Answer 2

[the cyclist]

If you have a relatively new version of MATLAB, you can use the datetime data type.

[zeezo]

Thanks I have R2013b. does it work in this?

[the cyclist]

According to the documentation, that functionality was introduced in version R2014b.