*
* Correlogram of seasonal series
* pp 235-236
*
all 100
set y6 1 5 = 0.0
set y6 6 100 = .8*y6{1}+.8*y6{4}-.64*y6{5}+%ran(1.0)
graph(footer="Example of a seasonal series") 1
# y6 6 100
@bjident(method=yule,number=18) y6 6 100