MATLAB: Datenum with time in time vector

Question

Hi together!

I have a time vector: % code%%

t=[   '01:17:32'
  '01:17:34'
  '01:17:36'
  '01:17:37'
  '01:17:39'
  '01:17:41'
  '01:17:43'
  '01:17:44'
  '01:17:46'
  '01:17:48'
  '01:17:50'
  '01:17:51'
  '01:17:53'
  '01:17:55'
  '01:17:56'
  '01:17:58'
  '01:18:00'
  '01:18:02'
  '01:18:03'
  '01:18:05'
  '01:18:07'
  '01:18:09'
  '01:18:10'
  '01:18:12'
  '01:18:14'
  '01:18:16'
  '01:18:17'
  '01:18:19'
  '01:18:21'
  '01:18:23'
  '01:18:24'
  '01:18:26'
  '01:18:28'
  '01:18:29'
  '01:18:31']
%
end
i want to get the seriell number of this times with function DATENUM:

My code is like this:

formatIn='HH:MM:SS'
tt=datenum(t,formatIn)

i get the same seriell number. Why?

Thank you

Answer 1

I don't think you get the same number.

Try

    diff(tt)

and you will see that they are different.

Also, use

    format long

And look at your results again. The integral part is the day, which is going to be the same, the way you have your data.