[R] Re:Time-Series

From: Vito Ricci <vito_ricci_at_yahoo.com>
Date: Thu 13 Jan 2005 - 23:54:43 EST


Hi,

you can address to a single ts in a multivariate ts object by namets[,index]. See this example:

> dati

    X Y
1 100 200
2 150 210
3 180 220
4 200 230
5 220 250
> serie<-ts(dati,start=1999)
> serie
Time Series:
Start = 1999
End = 2003
Frequency = 1

       X Y
1999 100 200
2000 150 210
2001 180 220
2002 200 230
2003 220 250

> serie[,1] ## first ts

Time Series:
Start = 1999
End = 2003
Frequency = 1
[1] 100 150 180 200 220
> serie[,2] ## second ts

Time Series:
Start = 1999
End = 2003
Frequency = 1
[1] 200 210 220 230 250

Regards
Vito

you wrote:

In a dataframe you call one of the variable (or the column) connecting the
name of the column to the dataframe name by means of the $ sign:
so z$energy is the column named energy in the dataframe z.

I don't know how to do the same with a multi-variable time-series. I tried
both z.energy, z$energy to no avail.

What's the right synthax?

Ciao
Vittorio



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