[R] Creating zoo object on monthly time series

[Gabor Grothendieck]

You need to unambiguously specify what your data
looks like.  Please provide the dput output as previously
requested.  Also what version of zoo are you using?

packageDescription("zoo")$Version


On Sun, Jun 1, 2008 at 9:37 AM, Megh Dal <megh700004 at yahoo.com> wrote:
> I got following:
>
>> z <- zoo(data1[,3], as.yearmon(data1[,1], "%b-%y"))
>> head(z)
> Jan 0001 Jan 0002 Jan 0003 Jan 0004 Jan 0005 Jan 0006
>  1206.68   782.45  1187.00  1398.77  1883.23  1431.80
>
>> z <- zoo(data1[,3], as.Date(as.yearmon(data1[,1], "%b-%y")))
>> head(z)
> 0001-01-01 0002-01-01 0003-01-01 0004-01-01 0005-01-01 0006-01-01
>    1206.68     782.45    1187.00    1398.77    1883.23    1431.80
>
> Nowhere 1980 is coming. Any better suggestion?
>
> Gabor Grothendieck <ggrothendieck at gmail.com> wrote:
>
> On Sun, Jun 1, 2008 at 8:47 AM, Gabor Grothendieck
> wrote:
>> On Sun, Jun 1, 2008 at 8:35 AM, Megh Dal wrote:
>>> Hi all,
>>>
>>> I have following monthly time series :
>>>
>>>> head(data1)
>>> V1 V2 V3
>>> 1 Nov-80 NA 1007.44
>>> 2 Dec-80 NA 982.05
>>> 3 Jan-81 NA 994.25
>>> 4 Feb-81 NA 996.31
>>> 5 Mar-81 NA 939.91
>>> 6 Apr-81 NA 923.32
>>
>> If the suggestion below does not work then try
>> dput(head(data1)) to display it in an unambiguous form that is
>> readily re-input into R.
>>
>>>
>>> Now I want to convert it to a 'zoo' object. I wrote following syntax :
>>>
>>> ss = zoo(data1[,3], as.Date(data1[,1], format="%m/%y"))
>>>
>>
>> See ?strptime and try "%b-%y"
>
> That should be:
>
> z <- zoo(data1[,3], as.yearmon(data1[,1], "%b-%y"))
>
> or, if you want it as Date instead of yearmon:
>
> z <- zoo(data1[,3], as.Date(as.yearmon(data1[,1], "%b-%y")))
>
>>
>>> However I got following :
>>>> head(ss)
>>>
>>> 1007.44 982.05 994.25 996.31 939.91 923.32
>>>
>>>
>>> Can anyone please tell me what will be the correct syntax?
>>>
>>> Thanks
>>>
>>>
>>>
>>> [[alternative HTML version deleted]]
>>>
>>> ______________________________________________
>>> R-help at r-project.org mailing list
>>> https://stat.ethz.ch/mailman/listinfo/r-help
>>> PLEASE do read the posting guide
>>> http://www.R-project.org/posting-guide.html
>>> and provide commented, minimal, self-contained, reproducible code.
>>>
>>
>
>