I make the same mistake all over again. In particular, suppose we have:
a = c(1,2,3,4,5) and a variable that equals 1 for the elements I want to select: t = c(1,1,1,0,0) To select the first 3 elements. The problem is that a[t] would repeat the first element 3 times ..... I have to either convert `t` to boolean: a[t==1] Or use `which` a[which(t==1)] How can I "spot" this error? It often happens in long scripts. Do I have to check the type each time? Do you have any suggestions? ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see 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.
