I did xts(t(c(250,0,250,0)), Sys.Date) to create the new line of data: 2010-04-08 250 0 250 0 and then use rbind to add it to the existing table. thanks -- View this message in context: http://n4.nabble.com/how-to-manually-add-data-in-a-timeseries-tp1754790p1788231.html Sent from the Rmetrics mailing list archive at Nabble.com.