Displaying 1 result from an estimated 1 matches for "airlm".
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ailm
2011 Dec 13
2
Problem with ploting fitted values
...a(AirPassengers)
AP <- AirPassengers
class(AP)
start(AP)
end(AP)
frequency(AP)
lgAP <- log(AP)
t<-2:length(AP)
APsL<-log(ts(lgAP, start=1949, frequency=12))
final<-(ts.intersect(lgAP,lgAPlag=lag(lgAP,-1), t=t,
sin12 = sin(2*pi*t/12), cos12 = cos(2*pi*t/12),dframe=TRUE))
summary(AIRlm <- lm(lgAP ~ lgAPlag + t + sin12 + cos12, data=final))
plot(lgAP, main="Log of Air Passengers",type="l", col=4, lty=2, lwd=2)
lines(t, AIRlm$fitted, col=2, lwd=2)
legend("topleft", legend=c("data", "fitted"), lty=c(2,1), col=c(4,2))
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