Certain errors seem to generate messages that are less informative than most -- they just tell you which function an error happened in, but don't indicate which line or expression the error occurred in.
Here's a toy example: > f <- function(x) {a <- 1; y <- x[list(1:3)]; b <- 2; return(y)} > options(error=NULL) > f(1:3) Error in f(1:3) : invalid subscript type > traceback() 1: f(1:3) > In this function, it's clear that the error is in subscripting 'x', but it's not always so immediately obvious in lengthier functions. Is there anything I can do to get a more informative error message in this type of situation? I couldn't find any help in the section "Debugging R Code" in "R-exts" (or anything at all relevant in "R-intro"). (Different values for options(error=...) and different formatting of the function made no difference.) -- Tony Plate > sessionInfo() R version 2.5.0 (2007-04-23) i386-pc-mingw32 locale: LC_COLLATE=English_United States.1252;LC_CTYPE=English_United States.1252;LC_MONETARY=English_United States.1252;LC_NUMERIC=C;LC_TIME=English_United States.1252 attached base packages: [1] "stats" "graphics" "grDevices" "utils" "datasets" "methods" [7] "base" other attached packages: tap.misc "1.0" > ______________________________________________ R-help@stat.math.ethz.ch 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.