Hi everyone
Please, I need one more help you
I have some data that need to make a forecast.
I´m using the command: Yst<-print(ts<-ts(Y,start=c(1,5),freq=7),calendar=T)
to create the dayly time series by the dataframe Y.
My data Y means: Y=measure dayly , start at 01/jul/2010 (thursday), for this
reason that I use c(1,5).
I need to create the time series aggregate by weakly (and not dayly as shown
above), but if I use the command freq=7 is dayly, freq=12 is month, freq=12
is year, freq=5 the Arima command don´t recognize the períod, if I use
freq=4 is trimestral.
I can to aggregate into excel and after import to R, but anyway, I will need
to create the time series (weekly) and again I back to start point.
How can I transform my data- frame Y in time series aggregate by weakly
where the command arima recognize the period?
Tks
Flávio
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