[R] seq.Date when date is the last date of the month

[jim holtman]

yes it is the expected behaviour is you check the documentation:

Using "month" first advances the month without changing the day: if
this results in an invalid day of the month, it is counted forward
into the next month: see the examples.

Jim Holtman
Data Munger Guru

What is the problem that you are trying to solve?
Tell me what you want to do, not how you want to do it.


Jim Holtman
Data Munger Guru

What is the problem that you are trying to solve?
Tell me what you want to do, not how you want to do it.


On Thu, Jan 7, 2021 at 11:20 AM Jeremie Juste <jeremiejuste using gmail.com> wrote:
>
> Hello,
>
> I recently bumped into a behavior that surprised me.
> When performing the following command, I would expect the second
> argument to be "2012-09-30" but got "2012-10-01" instead
> > seq(as.Date("2012-08-31"),by="1 month",length=2)
> [1] "2012-08-31" "2012-10-01"
>
> When the same command is performed for the start of the month. I get a
> result I expect.
> > seq(as.Date("2012-08-01"),by="1 month",length=2)
> [1] "2012-08-01"
>
>
> Is there an explanation for this behavior?
>
> Best regards,
> --
> Jeremie Juste
>
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