[R] Conversion of S+ libraries

[Bill.Venables at csiro.au]

It would certainly not be straightforward, unless Tibco has done a lot of work to make it possible in recent years, (which is not unlikely).  They have done a lot of work in the other direction, i.e. enabling R packages to be used within S-PLUS.

S-PLUS has the concept of a "chapter", which roughly corresponds to a working directory in R, but also the package.  The chapter is already strongly file structured, and quite different to the way R has of doing things.  There is also the notorious scoping rule problem which makes translation of advanced code quite tricky, if not actually impossible.  S-PLUS does not (or at least did not) have the equivalent R environments, for example.  It has a concept of "frames", which is a very different thing and much less flexible.

When moving from S-PLUS libraries to R packages, my approach would be to go back to the code, get it working in R and then build the R package.  The middle part, getting it going in R, may take some time.

-----Original Message-----
From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org] On Behalf Of Treacy, Glenn
Sent: Thursday, 21 October 2010 7:27 PM
To: r-help at r-project.org
Subject: [R] Conversion of S+ libraries

Does anyone have any advice on converting S+ libraries to R packages?
 
Glenn

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