search for: walkcod

...of the args list of '.Internal' being evaluated was: (x) The problem seems to happen because of the call to matrix with a missing argument in glm: matrix(, NROW(Y), 0L) The fix is to rewrite showTreeCall like this : showTreeCall <- function (e, w) { w$write("(") walkCode(e[[1]], w) for (a in as.list(e[-1])) { if( !missing(a)){ w$write(" ") walkCode(a, w) } } w$write(")") } > version _ platform i686-pc-linux-gnu arch i686 os linux-gnu syst...

Is there an easy way to identify all the functions called as a result of invoking a function? Getting the calling hierarchy too would be nice, but is definitely not essential. I'm trying to understand someone else's package, which is in a namespace and has some S3 functions. I could probably live without tracing the S3 functions. All the functions I want to trace are in R. The code

Hello, I have a setup similar to Rweb ( http://www.math.montana.edu/Rweb/ ): I get R scripts from users and need to execute them in in a safe manner (they are executed automatically, without human inspection). I would like to limit the user's script to reading from STDIN and writing to STDOUT/ERR. Specifically, preventing any kind of interaction with the underlying operating system (files,