Filter only specific month from date serial number

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AA 2017-3-16

0
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https://ww2.mathworks.cn/matlabcentral/answers/330258-filter-only-specific-month-from-date-serial-number

回答： Peter Perkins 2017-3-16

Hi guys, I got a column with a date serial number and I would like to filter only the month of march. What is the coding for that?

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Answer 1

Peter Perkins 2017-3-16

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https://ww2.mathworks.cn/matlabcentral/answers/330258-filter-only-specific-month-from-date-serial-number#answer_259074

Unless you're using a version prior to R2014b, use datetimes:

>> dn = 736696 + 90*rand(10,1)
dn =
          736755.016662924
          736699.214051072
          736772.421637528
          736780.059392298
          736757.086163937
          736764.196611752
          736762.881922131
          736731.300431758
          736754.993010116
          736711.406801903
>> d = datetime(dn,'ConvertFrom','datenum')
d = 
  10×1 datetime array
   01-Mar-2017 00:23:59
   04-Jan-2017 05:08:14
   18-Mar-2017 10:07:09
   26-Mar-2017 01:25:31
   03-Mar-2017 02:04:04
   10-Mar-2017 04:43:07
   08-Mar-2017 21:09:58
   05-Feb-2017 07:12:37
   28-Feb-2017 23:49:56
   16-Jan-2017 09:45:47
>> (d.Month == 3)
ans =
  10×1 logical array
   1
   0
   1
   1
   1
   1
   1
   0
   0
   0