Dear All,
Would anyone happen to have tips on how to do a pseudo-additive seasonal
decomposition in R?
I am working on a ca. 20 year monthly time series on species abundance data,
with annual peaks of varying magnitude and zero abundances between the seasonal
occurrences.
I have tried to use the package "x12", which utilizes x12arima, but
without luck so far. More specifically, I am trying to run the following code,
using R version 2.15.0:
Cx12 <- x12(Cyanea.ts, period=12,
x12path="C:\\x12a.exe", use="x12",
forecast_years=0,
transform="none",
x11regress=F,
samode="pseudoadd",
seasonalma="s3x3")
Everything seems to run ok and a number of files get saved in the source
directory and folder 'gra'. However, when I try to call the resulting
object Cx12, e.g. with 'summary(Cx12)', I receive an "Error: object
'Cx12' not found".
If anyone has a solution to the above problem, or alternative solutions to
getting the decomposition done, I would much appreciate the help!
Regards,
Aino
Aino Hosia
Postdoc
Havforskningsinstituttet/Institute of Marine Research
PO Box 1870 Nordnes, N-5817 Bergen, Norway
(Nordnesgaten 50)
Tel: +47 55 23 53 49
E-mail: aino.hosia@imr.no<mailto:aino.hosia@imr.no>
www.imr.no<http://www.imr.no/>
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