Oliver, It is mainly a speed issue (and also compactness!), at least for me. Using `apply' is so much slower. I agree with you that having column and row operations available for "basic" stats operations in "base" would be great.
David - I am aware of capabilities in other packages, but I am hoping that such basic operations would be part of "base" distribution. Ravi -----Original Message----- From: oliver [mailto:oli...@first.in-berlin.de] Sent: Thursday, April 19, 2012 2:34 PM To: Ravi Varadhan Cc: r-devel@r-project.org Subject: Re: [Rd] Column(row)wise minimum and maximum On Thu, Apr 19, 2012 at 08:31:56PM +0200, oliver wrote: > On Thu, Apr 19, 2012 at 06:12:30PM +0000, Ravi Varadhan wrote: > > Hi, > > > > Currently, the "base" has colSums, colMeans. It seems that it would > > be useful to extend this to also include colMin, colMax (of course, > > rowMin and rowMax, as well) in order to facilitate faster > > computations for large vectors (compared to using apply). Has this > > been considered before? Please forgive me if this has already been > > discussed before. > [...] > > Not sure if the performance of apply is so much of a problem, but also > from a view of consistency of the provided functions, I think offering > such functions would make it more clear and consitent to use R here, > because all those functions are then available for row and col and the > functionality is appended in the name (Mean, Sum etc.). > > I think the basic things that should be available woud be: > > - mean > - median > - min > - max > - var > - sd - sum :-) - diff Ciao, Oliver ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel