R help - Dec 2000 - Re: ESS for R

>>>>> "BR" == B Rowlingson <B.Rowlingson at
lancaster.ac.uk> writes:

    >> Could you check and see if the variable is global or
    >> buffer-local?  ("C-h v ess-dump-filename-template" should
do
    >> it).

    BR> ess-dump-filename-template's value is "rowlings.%s.S"
Local in
    BR> buffer *S+5*; global value is "rowlings.%s.S" [+ docs]
Defined
    BR> in `ess-cust'.

    BR>  whereas ess-source-directory is:

    BR> ess-source-directory's value is "./Src99/" [+ docs]
Defined in
    BR> `ess-cust'.

    BR>  Such scoping concepts are beyond my meagre elisp
    BR> knowledge. There's a whole bunch of
    BR> 'make-variable-buffer-local' calls in ess-cust.el but neither
    BR> of the two variables are mentioned...

The problem is this:
   buffer-local variables accomodate any value which might vary
   between buffers.  So, the "right" place to define this will be in a
   hook that gets called when R-mode gets called, since for example,
   we'd like to dump SAS code in rowlings.%s.sas, etc.

   I think that ess-dump-filename-template needs to be redefined in
   essd-sp5.el , or essd-r.el, if you want your site-configs to persist
   across users (and actually work).

HOWEVER, you mentioned that what you wanted was the "default" function
thing, i.e. 
        dumped <- function { }
placed into a non-existant buffer.  This is a difference as far as how
S-PLUS and R dump objects, I think.  Your point, which I recall (I've
not used S-PLUS for actual data analysis in a long time) is that this
gets set for non-existant objects when using ESS for S-PLUS, and not
for R, sounds familiar.

I've CC'd ESS-help and R-help; can anyone verify this discrepancy
(with ESS under S-PLUS and R)?

best,
-tony

-- 
A.J. Rossini				Rsrch. Asst. Prof. of Biostatistics
BlindGlobe Networks (home/default)	rossini at blindglobe.net	
UW Biostat/Center for AIDS Research	rossini at u.washington.edu	
FHCRC/SCHARP/HIV Vaccine Trials Net	rossini at scharp.org

FHCRC: M/Tu: 206-667-7025 (fax=4812) | Voicemail is pretty sketchy
CFAR:   W/F: 206-731-3647 (fax=3694) | Email is far better than phone
UW:    Th/F: 206-543-1044 (fax=3286) | Change last 4 digits of phone for fax
-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-
r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html
Send "info", "help", or "[un]subscribe"
(in the "body", not the subject !)  To: r-help-request at
stat.math.ethz.ch
_._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._

> HOWEVER, you mentioned that what you wanted was the "default"
function
> thing, i.e.
>         dumped <- function { }
> placed into a non-existant buffer.  This is a difference as far as how
> S-PLUS and R dump objects, I think.  Your point, which I recall (I've
> not used S-PLUS for actual data analysis in a long time) is that this
> gets set for non-existant objects when using ESS for S-PLUS, and not
> for R, sounds familiar.
> 
> I've CC'd ESS-help and R-help; can anyone verify this discrepancy
> (with ESS under S-PLUS and R)?
 Its because the first thing Splus's dump(foo) function does is to write

"foo" <- 

 into the dump file. If the object doesn't exist, its not until that
point
that the dump stops, and you are left with  '"foo" <-' in
the file.

 ESS uses this, and appends the ess-function-template to get 

"foo" <- function( ) { } 

 in function ess-dump-file-other-window.

 Since R gives you a zero-length file when you dump a non-existent
object, 
ESS cant use this trick, and since ess-dump-file-other-window is only
passed the filename and not the object name it cant write it to the file
(unless it deparses the filename. Ick.).

 I've rewritten ess-dump-file-other-window to take filename and object
as
argument. If it spots a new object (using the ess-dumped-missing-re as
before)
then it clears out the buffer and inserts "object" <-
(ess-function-template).

 This works for Splus 5 and R 1.2.0. I don't have any of the other
systems that
ESS uses so I cant see if it breaks anything else.

 One other related matter - if ess-function-template isn't formatted
exactly how
the pretty-formatter does it, then the buffer is reformatted and marked
as modified,
nullifying the (set-buffer-modified-p nil) in the dump function. Bug or
feature? 
You decide.

Barry
-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-
r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html
Send "info", "help", or "[un]subscribe"
(in the "body", not the subject !)  To: r-help-request at
stat.math.ethz.ch
_._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._