Hi. I have 2 tables, with same dimensions (8000 x 5). Something like:
tab1: V1 V2 V3 V4 V5 14.23 1.71 2.43 15.6 127 13.20 1.78 2.14 11.2 100 13.16 2.36 2.67 18.6 101 14.37 1.95 2.50 16.8 113 13.24 2.59 2.87 21.0 118 tab2: V1 V2 V3 V4 V5 1.23 1.1 2.3 1.6 17 1.20 1.8 2.4 1.2 10 1.16 2.6 2.7 1.6 11 1.37 1.5 2.0 1.8 13 1.24 2.9 2.7 2.0 18 I need generate a table of averages, the elements in the same position in both tables, like: tab3: (14.23 + 1.23)/2 (1.71+1.1)/2 (127+17)/2 and so on I tried the program: Médias = matrix(NA, nrow(tab1), ncol(tab1)) for(i in 1:nrow(tab1)){ for(j in 1:ncol(tab1)){ for(k in 1:nrow(tab2)){ for(l in 1:ncol(tab2)){ Médias = tab1$i[j] }}}} Médias but it does't work. I don't know programming. How can I do this? Thanks, --------------------------------------------- Silvano Cesar da Costa Universidade Estadual de Londrina Centro de Ciências Exatas Departamento de Estatística Fone: (43) 3371-4346 ______________________________________________ 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.