Hi all, I like how smart xts and would like to pick out a period from my xts object*. I am able to pick out periods of particular years, for example : conc.xts<-tt.xts['1983'] My question is, how can I pick out say, a) just the first 6 months of 1983. b) several years, say 1983 AND 1984 c) 18 month periods ... etc Your help is really appreciated! Thanks! *An ?xts? object from 1983-01-11 13:00:00 to 2005-01-02 containing: Data: num [1:153086, 1:4] 7 6.2 5.7 4.9 5.7 6.6 6.2 7.4 7 8 ... - attr(*, "dimnames")=List of 2 ..$ : NULL ..$ : chr [1:4] "v_a_ref" "DD_a_ref" "v_a_site" "DD_a_site" Indexed by objects of class: [POSIXt,POSIXct] TZ: Original class: 'data.frame' xts Attributes: NULL -- View this message in context: http://r.789695.n4.nabble.com/Picking-out-dates-in-xts-tp2334813p2334813.html Sent from the R help mailing list archive at Nabble.com.