[R] extracting columns from a ts series

Antonio rod.chav at hsoft.es
Tue Sep 25 18:32:07 CEST 2001

Hi All,

I have a time series called 'upwelling',  like this:


       	Jan   Feb   Mar   Apr   May   Jun   Jul   Aug   Sep   Oct   Nov
1984           	              494.7 303.7 220.8 288.4 188.1 125.5 215.7
1985  	56.0 127.4 165.8 189.4 261.6 223.7 186.3 150.2 107.8 120.3  91.1

from 1984 until 2000. How do I could extract, i.e, Jan or Dec columns from
the data? Or how do I could calculate, say, winter upwelling: Dec+Jan+Feb+Mar?



PD: Does anybody knows if the EM algorithm (Shumway and Stoffer) for
missing data,  has been developped within R?
Antonio Rodríguez Verdugo
C.I.C.E.M. "Agua del Pino"
Delegacion Provincial de Agricultura y Pesca
P.O. Box 104
21071 HUELVA (Spain)

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