search for: baseu000

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2008 Jan 17
0
Proper Usage of the XREG in ARIMA
...if there was conversion activity during the week). I never really could figure out in R (only been using it a week or so) how to pull out part of an array. Also should I do my disection prior to or after concerting it into a ts object? the short of the script is (removing plots etc..): ---------- baseU000 <- read.csv("testfile.csv",header=T) #--- hmm what happens in years with a 53rd week... tsbaseU000 <- ts(baseU000,start=2004,frequency=52) #--- add regressors arimafit <- auto.arima(tsU000[,2],approximation=T,stepwise=N) forecastU000 <- forecast(arimafit,52) plot(forecastU000...