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datetime() does not return time data

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Emily T. Griffiths
Emily T. Griffiths am 26 Okt. 2022
Kommentiert: Steven Lord am 27 Okt. 2022
Hello all,
I just noticed a bug in my code that my datetime function is not converting time data from the character string.
My code is the following:
DTstart = datetime("2021-11-16 11:48:00", "InputFormat","yyyy-MM-dd HH:mm:ss");
This has worked on all versions of matlab without fail. However, I just updated to 2022b. Now when I run this, instead of getting:
DTstart =
datetime
16/11/2021 11:48:00
I get simply:
DTstart =
datetime
16/11/2021
This is causing a HUGE headache in my code. I need to look at thing by the second. It doesn't matter if I run the text as a string or a character. Everytime I try to search for an alternative, I just get redirected to the datetime function. Can someone please explain to me why this function is no longer working, or perhaps suggest an alternative?

Akzeptierte Antwort

Steven Lord
Steven Lord am 26 Okt. 2022
In the Preferences, expand the MATLAB item in the tree. Select the Command Window item. What does it list for the default datetime display formats? Did you accidentally change the default?
  2 Kommentare
Emily T. Griffiths
Emily T. Griffiths am 27 Okt. 2022
Oh my goodness. Thank you so much. I wasn't aware this could change. Like I said, I just updated, so perhaps I clicked something during the install. Relieved to know the data is still there!
Steven Lord
Steven Lord am 27 Okt. 2022
Even if you'd changed the display format, the data was still present in the variable.
DTstart = datetime("2021-11-16 11:48:00", ...
"InputFormat","yyyy-MM-dd HH:mm:ss", ...
'Format', 'yyyy-MM-dd')
DTstart = datetime
2021-11-16
You can see this by asking for the time of day stored in DTstart.
timeofday(DTstart)
ans = duration
11:48:00

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Weitere Antworten (1)

Voss
Voss am 26 Okt. 2022
Try specifying the Format (in addition to the InputFormat):
DTstart = datetime("2021-11-16 11:48:00","InputFormat","yyyy-MM-dd HH:mm:ss",'Format','dd/MM/yyyy')
DTstart = datetime
16/11/2021
DTstart = datetime("2021-11-16 11:48:00","InputFormat","yyyy-MM-dd HH:mm:ss",'Format','dd/MM/yyyy HH:mm:ss')
DTstart = datetime
16/11/2021 11:48:00
  1 Kommentar
Emily T. Griffiths
Emily T. Griffiths am 27 Okt. 2022
I had tried this, but as seen above, it was a display issue. :)

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