I have compared "dat11" and "x" using str() function, however did not find drastic difference:
> str(dat11) ‘zoo’ series from 2010-10-15 13:43:54 to 2010-10-15 13:49:51 Data: num [1:7, 1:4] 73.8 73.8 73.8 73.8 73.8 73.8 73.7 73.8 73.8 73.8 ... - attr(*, "dimnames")=List of 2 ..$ : chr [1:7] "7" "6" "5" "4" ... ..$ : chr [1:4] "V2" "V3" "V4" "V5" Index: POSIXlt[1:7], format: "2010-10-15 13:43:54" "2010-10-15 13:44:15" "2010-10-15 13:45:51" "2010-10-15 13:46:21" "2010-10-15 13:47:27" "2010-10-15 13:47:54" ... > str(x) ‘zoo’ series from 2003-02-01 to 2003-02-14 Data: int [1:5, 1:2] 1 2 3 4 5 6 7 8 9 10 Index: Class 'Date' num [1:5] 12084 12086 12090 12092 12097 Thanks, -- View this message in context: http://r.789695.n4.nabble.com/Problem-with-merging-two-zoo-objects-tp2997472p2997510.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.