Why isn't the year in my categorical array time properly converted in Matlab?

Question

Javier 2019-10-30

0
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https://ww2.mathworks.cn/matlabcentral/answers/488233-why-isn-t-the-year-in-my-categorical-array-time-properly-converted-in-matlab

回答： Javier 2019-10-30

I have the following catergorical array in Matlab

    time(1:3)
    
    ans = 
    
      3×1 categorical array
    
         13-10-19 00:03 
         13-10-19 00:08 
         13-10-19 00:12 

I want to use it as x-axis for a timeseries, in order to do so I need it as time string, so what I have done is the following

    string(time(1:3))
    
    ans = 
    
      3×1 string array
    
        "13-10-19 00:03"
        "13-10-19 00:08"
        "13-10-19 00:12"

If I cavert it using either datetime or datestr the year seems to be lost or wrongly converted

    datetime(string(time(1:3)))
    
    ans = 
    
      3×1 datetime array
    
       19-Oct-0013 00:03:00
       19-Oct-0013 00:08:00
       19-Oct-0013 00:12:00
    
    datestr(string(time(1:3)))
    
    ans =
    
      3×20 char array
    
        '19-Oct-0013 00:03:00'
        '19-Oct-0013 00:08:00'
        '19-Oct-0013 00:12:00'