Nothing is wrong with arima: those commands are part of make check, so
your copy of R has been corrupted. Search for masked functions, and try
starting R with --vanilla.
On Sun, 29 Aug 2004, Remigijus Lapinskas wrote:
> Dear All,
>
> R 1.9.1, Windows
>
> When copying and pasting a few lines from the 'predict.Arima' help,
I
> get an error message:
>
> > data(lh)
> > predict(arima(lh, order = c(3,0,0)), n.ahead = 12)
> Error in eval(expr, envir, enclos) : Object "xreg" not found
>
> On the other hand, the following is OK:
>
> > data(lh)
> > predict(arima0(lh, order = c(3,0,0)), n.ahead = 12)
> $pred
> Time Series:
> Start = 49
> End = 60
> Frequency = 1
> [1] 2.460173 2.270829 2.198597 2.260696 2.346933 2.414479 2.438918
2.431440 2.410223 2.391645 2.382653 2.382697
>
> $se
> Time Series:
> Start = 49
> End = 60
> Frequency = 1
> [1] 0.4226823 0.5029332 0.5245256 0.5247161 0.5305499 0.5369159 0.5388045
0.5388448 0.5391043 0.5395174 0.5396991 0.5397140
>
> So, what is wrong with arima?
--
Brian D. Ripley, ripley at stats.ox.ac.uk
Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/
University of Oxford, Tel: +44 1865 272861 (self)
1 South Parks Road, +44 1865 272866 (PA)
Oxford OX1 3TG, UK Fax: +44 1865 272595