How to calculate time elapsed

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Mekala balaji
Mekala balaji 2016-2-16
编辑： Stephen23 2016-2-18
Hi, I have two time intervals in the following format:
t1=2/4/2016 1:53:19.180 AM t2=2/4/2016 1:54:49.368 AM
I want to calculate time elapsed between t1 &t2 in seconds. I used 'etime' command, but not succeed. Kindly some one help how to calculate.
Sincerely, Mekala

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Stephen23
Stephen23 2016-2-16
>> s1 = '2/4/2016 1:53:19.180 AM';
>> s2 = '2/4/2016 1:54:49.368 AM';
>> t1 = datevec(s1,'dd/mm/yyyy HH:MM:SS.FFF AM');
>> t2 = datevec(s2,'dd/mm/yyyy HH:MM:SS.FFF AM');
>> etime(t2,t1)
ans =
90.1880
  2 个评论
Mekala balaji
Mekala balaji 2016-2-18
Hi Sir,
It works, but one thing I have several continuous data, want to calculate time elapsed between two consecutive data points. But the problem is any two consecutive data may happen at two different time(one is in 'AM', and other one is 'PM'). So, how to handle it. Sincerely, Mekala
Stephen23
Stephen23 2016-2-18
编辑：Stephen23 2016-2-18
@Mekala balaji: just try my code exactly as it is. The symbolic identifiers AM and PM are not treated as literals, but are used to check for an AM/PM designator, exactly as you want. This is explained in the datevec documentation.
I also tested my code before I submitted it, including on times with AM and PM, and it worked just fine.

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