[R] ts startdate

Gregor Gawron gregor.gawron at rmf.ch
Fri Dec 6 18:09:54 CET 2002


Thanks Patrik,

 Great. It works too.

Gregor


-----Original Message-----
From: Patrick Burns [mailto:pburns at pburns.seanet.com] 
Sent: Freitag, 6. Dezember 2002 17:32
To: Gregor Gawron
Subject: Re: [R] ts startdate


I just realised that I had the English wrong in my message to you -- it 
should be:

what you want minus one

NOT

one minus what you want


Pat


Gregor Gawron wrote:

>Dear R-users,
>
>I am facing a trivial problem when trying to parameterise the start 
>date of a time series object. I am working with monthly data (104) 
>performing n-steps-ahead (6) forecasts and using a fixed window size 
>(36). At the end of calculations I have a list  that contains 69 
>forecasts. I have no problems in fixing the window size by 
>parametrization, e.g.
>
>k<- control variable in a for loop
>my.length<-36
>past<-window(X,start=c(1980,k - my.length + 1),end=c(1980,k))
>
>The integer defining the month number can be arbitrary set to: 6,16,46 
>etc and it always works. This, however, does not work when I try to 
>parameterise the start date of the result list
>
>my.forecasts<-unlist(my.result.list)
>my.forecast.results<-ts(my.forecasts,start=c(1980,my.length+6),frequenc
y
>=12)
>
>The message I recive is:
>
>Error in ts(my.frecasts, start = c(1980, my.length + 6), frequency = 
>12)
>: 
>        invalid start
>
>It seems that it works only for month integer up to 12. Does someone 
>know how to overcome this problem? Many thanks in advance.
>
>I am using R 1.5.1 on Windows 2000
>
>
>
>
>---
>Gregor Gawron
>
>______________________________________________
>R-help at stat.math.ethz.ch mailing list 
>http://www.stat.math.ethz.ch/mailman/listinfo/r-help
>
>




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