You can not convert numeric vectors directly to yearmon object. You must
convert the X variable to character and add “-“ between year and month. Then
as.yearmon function will work properly.
Please, read help pages of ?as.character, ?strptime and ?as.yearmon.
Example:
> library(zoo)
> aaa <- as.yearmon(c("2015-02”, “2014-06"))
> class(aaa)
[1] "yearmon"
> On 13 Jul 2016, at 16:25, Mangalani Peter Makananisa
> <pmakanan...@sars.gov.za> wrote:
>
> Hi All,
>
> I am trying to convert the vector below to dates please assist I have tried
> to use information on the links you sent, but it is not working.
>
> X = c(201501, 201502, 201503, 201505, 201506, 201507, 201508, 201509,
> 201510, 201511, 201512, 201601, 201602, 201603, 201604, 201605, 201606)
>
> library(chron, zoo)
> Z = as.yearmon(X) # it is not working
>
> please assist
>
> Kind regards
> Peter
>
> Please Note: This email and its contents are subject to our email legal
> notice which can be viewed at
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>
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>
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