express datetime from now, every 3h

code is

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t = datetime('now','TimeZone','local','Format','y-MMM-d HH');

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In command,

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t = 2016-Oct-31 00

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But I want to express in command

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t_1 = 2016-Oct-30 00

t_2 = 2016-Oct-30 03

t_3 = 2016-Oct-30 06

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every 3 hour

.

.

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please help me

Answer 1

[Peter Perkins]

In addition to Walter's suggestions, it may also be possible to take advantage of the roll-over behavior of the datetime constructor:

>> datetime(2016,11,1,(0:3:36)',0,0)
ans = 
  13×1 datetime array
   01-Nov-2016 00:00:00
   01-Nov-2016 03:00:00
   01-Nov-2016 06:00:00
   01-Nov-2016 09:00:00
   01-Nov-2016 12:00:00
   01-Nov-2016 15:00:00
   01-Nov-2016 18:00:00
   01-Nov-2016 21:00:00
   02-Nov-2016 00:00:00
   02-Nov-2016 03:00:00
   02-Nov-2016 06:00:00
   02-Nov-2016 09:00:00
   02-Nov-2016 12:00:00

[Jeong_evolution]

Thanks. Good Information!

Answer 2

[Steven Lord]

Don't create individual variables. Instead use the colon operator to create a vector.

N = datetime('now');
d = N:hours(3):(N+days(1));
% or
d = N + hours(0:3:24);

[Jeong_evolution]

Thanks. code is very simple. And good operate.