Worked perfect... Thanks a lot! Johannes
j.k wrote: > > Hello alltogheter, > I have a little problem regarding merging to zoo series. > I want to merge two zoo series to reduce the timegaps between the stamps. > I use the following code: > > data.test <- > as.POSIXct(seq(data.input01[1,1],data.input01[nrow(data.input01),1],900),tz="GMT") > data.troughput01 <- as.zoo(data.input01$V2) > index(data.troughput01) <- as.POSIXct(data.input01$V1,tz="GMT") > data.output01 <-merge(data.troughput01,zoo(,data.test)) > > They look like that: > > head(data.test) > [1] "2008-01-01 00:00:00 GMT" "2008-01-01 00:15:00 GMT" "2008-01-01 > 00:30:00 GMT" > [4] "2008-01-01 00:45:00 GMT" "2008-01-01 01:00:00 GMT" "2008-01-01 > 01:15:00 GMT" > >> head(data.troughput01) > 2008-01-01 00:00:00 2008-01-01 00:30:00 2008-01-01 01:00:00 2008-01-01 > 01:30:00 > 12.24180 11.27340 10.30500 > 9.33654 > 2008-01-01 02:00:00 2008-01-01 02:30:00 > 8.36811 7.62456 > >> head(data.output01) > 2008-01-01 01:00:00 2008-01-01 01:15:00 2008-01-01 01:30:00 2008-01-01 > 01:45:00 > 12.2418 NA 11.2734 > NA > 2008-01-01 02:00:00 2008-01-01 02:15:00 > 10.3050 NA > > > Are there any ideas why I have a lag of one hour? > > At last I fill the NAs with na.approx: > > data.output01 <-merge(data.troughput01,zoo(,data.test)) > >> head(data.output01) > 2008-01-01 01:00:00 2008-01-01 01:15:00 2008-01-01 01:30:00 2008-01-01 > 01:45:00 > 12.24180 11.75760 11.27340 > 10.78920 > 2008-01-01 02:00:00 2008-01-01 02:15:00 > 10.30500 9.82077 >> > > Maybe there are suggestions for other solutions of achieving the increase > of the resolution. > > Thanks in advance > Johannes > > -- View this message in context: http://www.nabble.com/shift-lag-when-merge-zoo-tp23057867p23078198.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ R-help@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.