Hi, I have spent some time locating a quite subtle (at least in my opinion) bug in my code. I want two nested for loops traversing the above-diagonal part of a square matrix. In pseudo code it would something like
for i = 1 to 10 { for j = i+1 to 10 { // do something } } However, trying to do the same in R, my first try was for (i in 1:10) { for (j in (i+1):10) { // do something } } but there's a problem here. For i=10, the last for loop is over 11:10. Usually programming laguages would regard what corresponds to 11:10 as empty, but A:B with A bigger than B is in R interpreted as the numbers from B to A in reverse order. Is there a clever way to make nested loops like the one above in R? -- Michael Knudsen micknud...@gmail.com http://lifeofknudsen.blogspot.com/ ______________________________________________ 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.