R-beta: restart() in R
plummer at iarc.fr
Wed Jul 16 10:57:37 CEST 1997
At 11:22 04/07/97, p.baker at fsc.qut.edu.au wrote:
>I just discovered R and it looks great under Windows NT4 or linux!
>I now can't put off learning SPlus. Other than learning S/S+ I also
>was hoping to use R for CODA a S+ MCMC diagnostics package. However, I
>am thwarted by R not having a restart function (and I suspect maybe
>other things too which I'm not aware of!).
>Although I suspect it may not be trivial, has anyone looked at making a
>restart function for R or at porting CODA?
I am porting CODA to R but I must confess I'm not doing it with any
great speed. I started by just trying to fix the incompatibilities with
R but my patience snapped fairly quickly and I'm now rewriting and
reorganizing it. Problems I am trying to deal with (apart from lack of
spare time) are
+ The code is really awful.
+ The code is really bloated. I'm trying to shrink it down to a
+ There isn't much infrastructure under the menu based interface. I'm
trying to reorganize CODA as a library of functions which can be
used by an experienced S user. At the moment there is no way to
break out of the menu system (CODA was designed for people with no
knowledge of S).
+ It contains a fair amount of (slightly modified) proprietary
code from MathSoft. This was included to allow CODA to be run on
versions of S-PLUS older than 3.2. I really don't think R users
should take bits of S-PLUS code just because they happen to be
useful, so I'll either have to rewrite these functions or (more
likely) strip them out.
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