This function is generic; method functions can be written to handle
specific classes of objects. Classes which already have methods for
this function include:
gls and
lme.
USAGE:
ACF(object, maxLag, ...)
REQUIRED ARGUMENTS:
object
any object from which an autocorrelation function can be
obtained. Generally an object resulting from a model fit, from which
residuals can be extracted.
OPTIONAL ARGUMENTS:
maxLag
maximum lag for which the autocorrelation should be
calculated.
...
some methods for this generic require additional
arguments.
VALUE:
will depend on the method function used; see the appropriate documentation.
REFERENCES:
Box, G.E.P., Jenkins, G.M., and Reinsel G.C. (1994) "Time Series
Analysis: Forecasting and Control", 3rd Edition, Holden-Day.