Hi Samuel GRANJEAUD,
Isn't this loop more simple to retain the click-order: result = numeric(n) for (i in 1:n) { id = identify(x, y, n=1) result[i] = id } Hope this helps, Best regards, Franklin Bretschneider Dept of Biology Utrecht University brets...@xs4all.nl ______________________________________________ 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.