Re: R-beta: Re: none

Peter Dalgaard BSA (p.dalgaard@kubism.ku.dk)
21 Oct 1997 11:11:21 +0200


To: Douglas Bates <bates@stat.wisc.edu>
Subject: Re: R-beta: Re: none
From: Peter Dalgaard BSA <p.dalgaard@kubism.ku.dk>
Date: 21 Oct 1997 11:11:21 +0200
In-Reply-To: Douglas Bates's message of 20 Oct 1997 08:49:06 -0500

Douglas Bates <bates@stat.wisc.edu> writes:

> One thing I would like to see is the ability of R to parse the
> data.dump format of objects created by S.  Has anyone looked at this
> at all?

I don't think so, but it looks pretty trivial, insofar as the internal
format is the same in the two languages. Basically, it seems to be the
object structure converted to prefix notation, with a few shortcuts
for the operators (<- is not coded in the same way as a function named
"<-" would be).

Incidentally, Splus 3.4 has a bug with "<-"-expressions:
> expression("<-"(y,3))
expression("<-" <- y)
(it's only in the deparsing, internal structure and function is OK)

-- 
   O__  ---- Peter Dalgaard             Blegdamsvej 3  
  c/ /'_ --- Dept. of Biostatistics     2200 Cph. N   
 (*) \(*) -- University of Copenhagen   Denmark      Ph: (+45) 35327918
~~~~~~~~~~ - (p.dalgaard@biostat.ku.dk)             FAX: (+45) 35327907
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