Convert gregorian day to yyyy-mm

Question

주희 박 2022-7-12

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1757735-convert-gregorian-day-to-yyyy-mm

评论： 주희 박 2022-7-13

采纳的回答： Chunru

Time.mat

Hi, I attached 'Time' variable from 1995-01-01~2021-12-15 and it is monthly data.

It's units = 'days since 1950-01-01 00:00:00

I want to convert it yyyy-mm .

This is what i tried

TT=datetime(1995,1,1)+hours(time); -> It starts 1996-11~
TT=years(time) ->Absolutely wrong
TT=datetime(time,'ConvertFrom','epochtime','Epoch','1950-01-01');->It's unit is seconds. Wrong

Please help me. Thanks.

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Answer 1

Chunru 2022-7-12

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1757735-convert-gregorian-day-to-yyyy-mm#answer_1004930

在 MATLAB Online 中打开

Time.mat

load Time.mat
%time
dt = datetime("1950-01-01 00:00:00") + days(time)
dt = 324×1 datetime array
   15-Jan-1995
   15-Feb-1995
   15-Mar-1995
   15-Apr-1995
   15-May-1995
   15-Jun-1995
   15-Jul-1995
   15-Aug-1995
   15-Sep-1995
   15-Oct-1995
   15-Nov-1995
   15-Dec-1995
   15-Jan-1996
   15-Feb-1996
   15-Mar-1996
   15-Apr-1996
   15-May-1996
   15-Jun-1996
   15-Jul-1996
   15-Aug-1996
   15-Sep-1996
   15-Oct-1996
   15-Nov-1996
   15-Dec-1996
   15-Jan-1997
   15-Feb-1997
   15-Mar-1997
   15-Apr-1997
   15-May-1997
   15-Jun-1997