Why do you use *double* square brackets on the left side of the replacement?
>From the help info for "[[": "The most important distinction between [, [[ and $ is that the [ can select more than one element whereas the other two select a single element." You seem to be selecting 20 elements. -----Original Message----- From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] On Behalf Of Jim Hargreaves Sent: Saturday, 26 June 2010 9:54 PM To: r-help@r-project.org Subject: [R] Recursive indexing failed at level 2 Dear fellow R users, I am replacing elements of a list like so: pulse_subset[[1:20]]=unlist(pulse[i])[1:20] where pulse is a list of lists, and pulse [i] has >20 values. This gives the error "Recursive Indexing failed at level 2". But, interestingly this instruction is part of a loop which has gone through about 200,000 iterations before giving this error. Actual code: > pulse_subset[[1:(length(unlist(pulse[i])[as.numeric(peak_start[i]):as.numeric(peak_end[i])]))]] <- unlist(pulse[i])[as.numeric(peak_start[i]):as.numeric(peak_end[i])] Error in pulse_subset[[1:(length(unlist(pulse[i])[as.numeric(peak_start[i]):as.numeric(peak_end[i])]))]] <- unlist(pulse[i])[as.numeric(peak_start[i]):as.numeric(peak_end[i])] : recursive indexing failed at level 2 If anyone could shed some light I'd be rather grateful. Regards, Jim Hargreaves ______________________________________________ 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. ______________________________________________ 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.