Hi, I have a zoo object with the first column as index. The columns have not been named yet... but that I can change. It looks like this : V2 V3 V4 V5 V6 2014-03-14 22:41:46.988804 10 2 8 3 14 2014-03-14 22:41:46.991126 13 4 9 5 15 2014-03-14 22:41:46.993506 12 4 8 3 14 2014-03-14 22:41:46.993755 19 4 15 5 22 2014-03-14 22:41:46.997780 21 5 16 7 24 2014-03-14 22:41:47.000154 18 5 13 3 21 2014-03-14 22:41:47.002376 21 5 16 6 23 2014-03-14 22:41:47.011106 12 4 8 3 14 2014-03-14 22:41:47.012691 12 4 8 3 16 2014-03-14 22:41:47.017579 11 2 9 3 12 2014-03-14 22:41:47.019463 12 5 7 3 15 2014-03-14 22:41:47.020247 14 6 8 3 17
I would like to find the mean of the V2 to V6 columns on a per second interval. Would anyone please be able to help me with a function and implementation for that please? Thanks so much! [[alternative HTML version deleted]] ______________________________________________ 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.