How to find the successive difference between timestamps in hours?

The attachment has 1138 samples of datenum format.I want to find the sum of total hours in this order of index (2-1)+(4-3)+(6-5)+.....+(1138-1137). Any suggestions. The answer comes around 200 hours.

Answer 1

[Guillaume]

 d = datetime(yourdatenumvector, 'ConvertFrom', 'datenum');  %convert to the more useful datetime
 sum(hours(d(2:2:end) - d(1:2:end)))

[Devansh Patel]

Can you do this with MATLAB 2013a. without using datetime function?

[Guillaume]

In R2013a, it could possibly be calculated with:

sum(yourdatenumvector(2:2:end) - yourdatenumvector(1:2:end)) * 24

No guarantee that it works correctly. 2013a is ancient now.

[Devansh Patel]

It works! Thankyou so much!