Hello R-help, I recently spent a lot of time debugging a program, and the problem turned out to be my own misuse of the det() function. A simple recreation of the problem would be
X <- diag (c(2,2,2)) det (X,log=TRUE) ## returns 8 as opposed to log 8 I had simply assumed that (along with many other basic R functions, such as dnorm etc) det can take an argument of log=TRUE and give you the log of the answer. At the very least, if it didn't do this, then I would get an "unused argument" error. The argument "log=TRUE" wasn't used (because now I have looked at the code for det, I see it supplies its own argument to determinant()) so is it not possible to return this error? I guess it is something to do with the way "..." behaves. Alternatively, is there a way for me to set up R so that it will tell me if arguments to functions with "..." aren't really being used? Many Thanks James Lawrence. ______________________________________________ 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.
