That should have been yearmon (not yearqtr):
> library(zoo) # as.yearqtr
>
> # test data
> x <- c("sep2009", "oct2009")
>
> # convert to "yearmon" class and from that to Date using frac = 1
> # where frac is between 0 and 1 inclusive indicating where
> # in the month the output date should be set to
>
> as.Date(as.yearmon(x, "%b%Y"), frac = 1)
[1] "2009-09-30" "2009-10-31"
On Sun, Sep 13, 2009 at 2:51 PM, Gabor Grothendieck
<ggrothendi...@gmail.com> wrote:
> Try this:
>
>> library(zoo) # as.yearqtr
>>
>> # test data
>> x <- c("sep2009", "oct2009")
>>
>> # convert to "yearqtr" class and from that to Date using frac = 1
>> # where frac is between 0 and 1 inclusive indicating where
>> # in the month the output date should be set to
>>
>> as.Date(as.yearqtr(x, "%b%Y"), frac = 1)
> [1] "2009-09-30" "2009-12-31"
>
> On Sun, Sep 13, 2009 at 2:18 PM, megh <megh700...@yahoo.com> wrote:
>>
>> Is there any R function to calculate automatically the last day of a
>> particular month? For example "sep2009" should be converted to last day of
>> September of 2009?
>>
>> Thanks
>> --
>> View this message in context:
>> http://www.nabble.com/How-to-get-last-day-of-a-month--tp25425645p25425645.html
>> Sent from the R help mailing list archive at Nabble.com.
>>
>> ______________________________________________
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>> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
>> and provide commented, minimal, self-contained, reproducible code.
>>
>
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