Dear Community, say, I have an annual ts() object sampled from 1960 to 1969 like: ta<-ts(1:10, start=1960, frequency=1) How can I extract the value from the year 1965? I mean, not by: ta[6] but by something like: ta[1965] where I'm directly referring to the year of the observation? Thank you in advance! -- View this message in context: http://r.789695.n4.nabble.com/simple-ts-object-question-tp2527085p2527085.html Sent from the R help mailing list archive at Nabble.com.
On Sun, Sep 5, 2010 at 12:08 AM, StatWM <wmusial at gmx.de> wrote:> > Dear Community, > > say, I have an annual ts() object sampled from 1960 to 1969 like: > > ta<-ts(1:10, start=1960, frequency=1) > > How can I extract the value from the year 1965? > > I mean, not by: > > ta[6] > > but by something like: > > ta[1965] > > where I'm directly referring to the year of the observation? > > Thank you in advance! >Use window.ts> ta <- ts(1:10, start = 1960) > window(ta, start = 1965, end = 1965)Time Series: Start = 1965 End = 1965 Frequency = 1 [1] 6 -- Statistics & Software Consulting GKX Group, GKX Associates Inc. tel: 1-877-GKX-GROUP email: ggrothendieck at gmail.com
Hi, There is probably an easier way, but this will work: ta[time(ta)==1965] With your data, I get:> ta[time(ta)==1965][1] 6 HTH, Josh On Sat, Sep 4, 2010 at 9:08 PM, StatWM <wmusial at gmx.de> wrote:> > Dear Community, > > say, I have an annual ts() object sampled from 1960 to 1969 like: > > ta<-ts(1:10, start=1960, frequency=1) > > How can I extract the value from the year 1965? > > I mean, not by: > > ta[6] > > but by something like: > > ta[1965] > > where I'm directly referring to the year of the observation? > > Thank you in advance! > > -- > View this message in context: http://r.789695.n4.nabble.com/simple-ts-object-question-tp2527085p2527085.html > Sent from the R help mailing list archive at Nabble.com. > > ______________________________________________ > R-help at r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. >-- Joshua Wiley Ph.D. Student, Health Psychology University of California, Los Angeles http://www.joshuawiley.com/