Hi all- I have a dataset (year, month, hour, co2(ppm), num1,num2)
[49,] 2006 11 0 383.3709 28 28 [50,] 2006 11 1 383.3709 28 28 [51,] 2006 11 2 383.3709 28 28 [52,] 2006 11 3 383.3709 28 28 [53,] 2006 11 4 383.3709 28 28 [54,] 2006 11 5 383.3709 28 28 [55,] 2006 11 6 383.3709 28 28 [56,] 2006 11 7 383.3709 28 28 [57,] 2006 11 8 383.3709 28 28 [58,] 2006 11 9 383.3709 27 27 [59,] 2006 11 10 383.3709 28 28 that repeats in this style for each month. I would like to compute the mean for each hour in three month intervals. i.e. average all 2pms for each day for months march, april and may. and then do this for each hour interval. i have been messing around with 'for loops' but can't seem to get the output I want. thanks in advance for any help- s.heck CU, Boulder ______________________________________________ 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.
