[R] Help Help!

[Kelvin Lam]

Hello!  I have two questions.

First of all, I have a problem dealing with acf
(Autocovariance function) and need help.  First I
defined a time series, x, which is a vector created by
x <- ts(rnorm(200)).  So I plugged the series directly
into the acf function, acf(x) and an error message
popped up as:

Error in .C("acf", as.double(x), as.integer(sampleT),
as.integer(nser),  : C/Fortran function name not in
load table

I downloaded R to my PC and am thinking if it's
anything to do with the operating system.  Please help
me out!

The second question is about arima simulation.  I have
an AR and MA process and need to simulate 200
observations from these two models.  Don't know how to
do.

Thank you for the help!  You can send me a mail at
lamkel at yahoo.com.  

Regards,
Kelvin Lam

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