I have a data set that looks like this: ID STRATA G_F_Bl Dkl N g_pr_dkl N_ha G_ha 20,103 2 1 5 5 0,002 250 0,5 20,103 2 1 7 3 0,0038 150 0,57 20,103 2 1 9 6 0,0064 300 1,92 20,103 2 1 11 1 0,0095 50 0,475 20,103 2 1 13 1 0,0133 50 0,665 20,103 2 1 15 1 0,0177 50 0,885 20,103 2 1 17 3 0,0227 150 3,405 20,103 2 1 21 2 0,0346 100 3,46 20,103 2 1 23 2 0,0415 100 4,15 20,103 2 1 25 2 0,0491 100 4,91 20,103 2 1 27 1 0,0573 50 2,865 20,103 2 1 29 1 0,0661 50 3,305 20,103 2 1 37 1 0,1075 50 5,375 20,7 2 1 5 10 0,002 500 1 20,7 2 1 7 7 0,0038 350 1,33 20,7 2 3 7 1 0,0038 50 0,19 20,7 2 1 9 7 0,0064 350 2,24 20,7 2 1 11 1 0,0095 50 0,475 20,7 2 1 13 1 0,0133 50 0,665 20,7 2 1 15 3 0,0177 150 2,655 20,7 2 1 19 2 0,0284 100 2,84 20,7 2 1 21 3 0,0346 150 5,19 20,7 2 1 23 2 0,0415 100 4,15
I'd like to calculate the mean for g_pr_dkl between Dkl for each ID. Can anybode please help me? Thanks, Sana -- View this message in context: http://r.789695.n4.nabble.com/Calculate-mean-between-to-classes-for-each-ID-tp4386842p4386842.html Sent from the R help mailing list archive at Nabble.com. [[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.
