How to count the number of hours with reference to a MATLAB formatted date?

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Ashish
Ashish 2014-8-20
评论： Ashish 2014-8-20
Using MATLAB datenum function, one can generate date patterns like 7.3560e+05. This represents 03-Jan-2014 02:00:00.
If I want to count the number of hours (for e.g. in this case: 50 hrs) of this number from 01-Jan-2013 00:00:00, how can I do it? I want to generalize for any datenum formatted date.
Thanks.

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Joseph Cheng
Joseph Cheng 2014-8-20
the number returned from datenum is in days. so if we go
time1 = datenum(datestr(now));
pause(1);
time2 = datenum(datestr(now));
deltaTime = (time2-time1)*24*60*60
then we should get deltaTime = 1 (second). So to count the hours we can go
time1 = datenum(datestr(now));
current_time = datestr(time1)
twodayslater = datestr(time1+50/24)
such that the 50 hours later is 2days 2 hours so we can see that when comparing the current_time to twodayslater.
  2 个评论
Joseph Cheng
Joseph Cheng 2014-8-20
so for your arbitrary datestr formatted date you can go
datestr(datenum(' 01-Jan-2013 00:00:00') +50/24)
As long as your date string is accepted into datenum you can go back and forth.

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