Calmonths issues with February
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What is going wrong here?
Shifting to the month end works fine for this example:
t0 = datetime(2016,1,1);t1 = dateshift(t0,'end','month')+calmonths(1:3)
t1 =
29-Feb-2016 31-Mar-2016 30-Apr-2016
But we do not get the month end when starting in Feb 2016:
t0 = datetime(2016,2,2);t1 = dateshift(t0,'end','month')+calmonths(1:3)
t1 =
29-Mar-2016 29-Apr-2016 29-May-2016
I first thought that this is an issue of leap year but the same problem occurs for 2015.
But then again, it works for March:
t0 = datetime(2015,3,3);t1 = dateshift(t0,'end','month')+calmonths(1:3)
t1 =
30-Apr-2015 31-May-2015 30-Jun-2015
What's the issue?
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Réponses (2)
Walter Roberson
le 13 Fév 2016
January and March have 31 days, so "1 month" relative to them is more clearly "last day of February" or "last day of April". But February has 29 days in 2016, so "1 month" relative to February 29 could mean March 29 instead of March 31. I bet if you were to try starting from the last day of April (the 30th) that it would show one month later to be May 30th instead of May 31.
I do not know the solution except perhaps to use calendarDuration() more directly.
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