Displaying 1 result from an estimated 1 matches for "statitonary".
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stationary
2007 Nov 26
3
Time Series Issues, Stationarity ..
...a composed of 24 values:
myinput = c(n1,n2...,n24);
# In order to make a forecasting a, I use the following codes
result1 = arima(ts(myinput),order = c(p,d,q),seasonal = list(order=c(P,D,Q)))
result2 = forecast(result1,12)
plot(result2)
Now, by using R code...
1) How can I determine if my data is statitonary or not ? (trend &
seasonal effects)
2) If not, how can I make it stationary ?
3) Is arima() function used only on STATIONARY data ? Or does it first
determine if the data is stationary or not and makes it stationary ?
(if it is non-stationary)
4) I tried different parameter values in arima() fu...