R devel - Feb 2006 - Rprintf loop status does not print under windows

Hello,
I am writing a c/c++ extension package that does some mcmc sampling, and
periodically writes the sampling status to the terminal via Rprintf.  So in
my sampling loop I have:

if(status == 100){
  Rprintf("%i...", s);
  status = 0;
}
status++;

Under linux/unix this works fine, but under windows the status is not
printed.  Am I missing something?

Thanks-
Andy

-- 
Andrew Finley, Research Fellow
Department of Forest Resources
College of Natural Resources
University of Minnesota
305 Green Hall
1530 Cleveland Avenue N.
St. Paul, MN 55108

Ph 612-624-1714 office
http://blue.fr.umn.edu/home

On 2/4/2006 1:14 PM, Andrew Finley wrote:
> Hello,
> I am writing a c/c++ extension package that does some mcmc sampling, and
> periodically writes the sampling status to the terminal via Rprintf.  So in
> my sampling loop I have:
> 
> if(status == 100){
>   Rprintf("%i...", s);
>   status = 0;
> }
> status++;
> 
> Under linux/unix this works fine, but under windows the status is not
> printed.  Am I missing something?
Looks like you have buffering enabled (the default).  In the Misc menu 
item, uncheck "buffered output" and you should see things sooner (but 
slower).

Duncan Murdoch

> -----Original Message-----
> From: r-devel-bounces at r-project.org 
> [mailto:r-devel-bounces at r-project.org] On Behalf Of Duncan Murdoch
> Sent: Saturday, February 04, 2006 1:23 PM
> To: Andrew Finley
> Cc: r-devel at r-project.org
> Subject: Re: [Rd] Rprintf loop status does not print under windows
> 
> 
> On 2/4/2006 1:14 PM, Andrew Finley wrote:
> > Hello,
> > I am writing a c/c++ extension package that does some mcmc 
> sampling, and
> > periodically writes the sampling status to the terminal via 
> Rprintf.  So in
> > my sampling loop I have:
> > 
> > if(status == 100){
> >   Rprintf("%i...", s);
> >   status = 0;
> > }
> > status++;
> > 
> > Under linux/unix this works fine, but under windows the 
> status is not
> > printed.  Am I missing something?
> 
> Looks like you have buffering enabled (the default).  In the 
> Misc menu 
> item, uncheck "buffered output" and you should see things sooner
(but
> slower).
... or add something like this in your C code:

#ifdef win32
	    R_FlushConsole();
#endif

Andy
 
> Duncan Murdoch
> 
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