[R] R v/s S-plus

[Liaw, Andy]

Right.  Splus has its own multicomp() function, which R doesn't have.
However, there's the multcomp package which does handle many-to-one
comparisons (but not exactly the Dunnett procedure).

For Saket's original question:  Splus 6.x also comes with the `robust' and
`missing' libraries for robust modelling and missing value imputations.  I
believe there are also bootstrap functions that people at Insightful wrote.
Also, it's probably fair to say that the trellis graphics in Splus is more
`mature' (although I must say that lattice in R has come a long way!).  R
does not have brush(), but you can do that (and lots more) with the xgobi or
the Rggobi package.  gam() in the mgcv package fits one type of GAM, but
gam() in Splus is different (and allow both loess and spline terms).
twoway() in Splus is missing in R (although there's medpolish in the eda
package).

I'm sure there's more, but these are what I can think of off the top of my
head.  It depends on whether these things matters to you.  (Why can't you
keep both?  It doesn't really take up that much room.  Also, to be fair,
should you also ask on S-news to get opnions from "the other side"?)

Andy

-----Original Message-----
From: John Deke [mailto:JDeke at mathematica-mpr.com]
Sent: Friday, October 25, 2002 4:09 PM
To: 'Saket Joshi'; 'r-help at stat.math.ethz.ch'
Subject: RE: [R] R v/s S-plus


This is probably a much more narrow answer than what you wanted, but I
noticed the other day that Splus has a function called qdunnett() that R
lacks (this has to do with multiple comparisons, I believe). Does anyone
know if there's an R equivalent to this SPlus function? 

-----Original Message-----
From: owner-r-help at stat.math.ethz.ch
[mailto:owner-r-help at stat.math.ethz.ch]On Behalf Of Saket Joshi
Sent: Friday, October 25, 2002 3:02 PM
To: r-help at stat.math.ethz.ch
Subject: [R] R v/s S-plus


Hi all,

I have Splus and R both on my unix machine. I intend to keep only one of
them. R looks to be a better choice. But I want to confirm. Is there any
function or group of functions in Splus that are absent in R?
Thanks,
Saket.


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