Error getting day of year from datetime.

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Adrienne Marshall
Adrienne Marshall 2016-4-11
评论： Adrienne Marshall 2016-4-11
Hi - I'm trying to extract a day of year from a datetime, and get the error message: "Function 'subsindex' is not defined for values of class 'datetime'."
I get this message even when I copy-paste the code from the documentation for the day function:
t = [datetime('yesterday');datetime('today');datetime('tomorrow')]
d = day(t)
Any ideas or suggestions?

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采纳的回答

Steven Lord
Steven Lord 2016-4-11
You've probably defined a variable named day in your workspace. MATLAB is trying to use the datetime array as an index into that variable, but MATLAB doesn't know how to do that. [What is x(lastTuesday)?] Remove the variable and the command should work.

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