[R] predict with arima0

[Erin Hodgess]

Dear R People:

I'm trying to use the predict command on an arima0 object.

I do the following:

xm.arma <- arima0(xm2,order=c(1,0,1))
predict(xm.arma,n.ahead=2)

and I get the message:
Error in round(x, digits) : Non-numeric argument to mathematical function


Any ideas what the problem might be, please?

R version 1 4 1 on Windows.

Thanks in advance!

Sincerely,
Erin Hodgess
Associate Professor
Department of Computer and Mathematical Sciences
University of Houston - Downtown
1 Main Street 
Houston, TX 77002
mailto: hodgess at uhddx01.dt.uh.edu
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