[R] periodogram smoothing question

[otunno at clemson.edu]

Hello -

I am currently simulating bivariate AR(1) time series data and have the
following line in my code:

Px=spec.pgram(ts.union(X,XX),spans=c(?,?))

The spans option is where I enter in the vector containing the Daniell
smoother numbers, but I don't know what a Daniell smoother is (hence the
question marks). Can somebody please tell me?

Is there another option where I can simply enter in the smoothing window
width?

Thanks, Ferebee