Diagnostic plots of the residual autocorrelations and Ljung-Box test.
Usage
"plot"(x, maxLag=30, ...)
Arguments
x
object of class "FitFGN"
maxLag
maximum lag in residual acf plot
...
optional arguments
Value
No value is returned. A plots are produced as side-effect.
The plot is a two-panel disply showing the residual autocorrelations
and the p-values for the Ljung-Box test.
Details
The top plot shows the residual autocorrelations and their 5% signficance
limits.
The bottom plot shows the p-values of the Ljung-Box test for various lags.
References
Ljung, G.M., Box, G.E.P. (1978).
On a Measure of Lack of Fit in Time Series Models.
Biometrika 65, 297-303.
McLeod, A.I., Yu, Hao, Krougly, Zinovi L. (2007).
Algorithms for Linear Time Series Analysis,
Journal of Statistical Software.