[Rd] Arguments passing through dot-dot-dot lose ability to check for missing()?

2013-01-23 Thread Peter Meilstrup
Hi R-devel. Is the following behavior in g1() and h1() expected? It seems to make "..." arguments work slightly differently from named arguments. #missing() has the property that it looks "up the chain" #for example, "z" can be missing in f3 even if #that argument did have a name ("y") in f2 f1 <-

Re: [Rd] maintaining multiple R versions

2013-01-23 Thread Paul Gilbert
Aaron For the problem I had in mind, changing a couple of environment variables does not seem like more work than this, but it may solve a bigger problem than the one I was thinking about. If I understand correctly, you can use this to switch among versions of R, similar to what I am doing a

Re: [Rd] na.omit option in prcomp: formula interface only

2013-01-23 Thread Matthieu Stigler
Dear r-devel list, dear Ben I came across a post of Ben Bolker from Feb 2012 (see below) on handling NA values in prcomp(). As I faced the same issue and found Ben's suggestions interesting, I was wondering whether this led to further discussions I might have missed? I understand handling NA value