Hi I'll ask in a different way... I have all this in a file.txt
1990-01-01 10:00:00 , 0.900 # element 1 1990-01-01 10:01:00 , 0.910 # element 2 1990-01-01 10:03:00 , 0.905 # element 3 1990-01-01 10:04:00 , 0.905 # element 4 1990-01-01 10:05:00 , 0.890 # element 5 .................................................................. 2000-12-30 20:00:00 , 11.233 # element 3323232 How do I loop through the index? first element 1, then element 2, then the third... How do I extract the day or the hour or the minutes from an element from the index(element n)? -- View this message in context: http://r.789695.n4.nabble.com/working-with-zoo-time-index-tp2255804p2257591.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.