[R] bug Rcmdr

[John Fox]

Dear Duncan,

Thanks for this. I haven't yet had a chance to look at the code but will
probably later today. I think that I understand what's going on and how to
fix it.

Regards,
 John

--------------------------------
John Fox, Professor
Department of Sociology
McMaster University
Hamilton, Ontario, Canada L8S 4M4
905-525-9140x23604
http://socserv.mcmaster.ca/jfox


> -----Original Message-----
> From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-
> project.org] On Behalf Of Duncan Murdoch
> Sent: January-04-08 1:16 PM
> To: John Fox
> Cc: r-help at r-project.org
> Subject: Re: [R] bug Rcmdr
> 
> On 1/4/2008 12:25 PM, John Fox wrote:
> > Dear Richard and Jeremy,
> >
> > I suspect this is coming from how assignments are handled, and may be
> hard
> > to fix. I'll take a look.
> >
> > Oddly, I can't duplicate this error when the commands are entered on
> a
> > single line separated by semicolons; then I get the error message
> >
> > 	unexpected ';' in "withVisible( a <- 2;"
> >
> > both under Windows and Ubuntu (R 2.6.1, Rcmdr 2.3-10 in both OSes).
> 
> This happens because you're wrapping the expression in withVisible(),
> then parsing it.  If you add braces it should be fine, i.e. wrap in
> 
> "withVisible({", "})"
> 
> so that you end up executing
> 
> withVisible({ a<- 2; a <- a+5; a })
> 
> instead of the syntax error
> 
> withVisible( a<- 2; a <- a+5; a )
> 
> I've sent more on the double evaluation problem privately.
> 
> Duncan Murdoch
> 
> >
> > Thanks for the information. I'll see what I can do.
> >
> > John
> >
> > --------------------------------
> > John Fox, Professor
> > Department of Sociology
> > McMaster University
> > Hamilton, Ontario, Canada L8S 4M4
> > 905-525-9140x23604
> > http://socserv.mcmaster.ca/jfox
> >
> >
> >> -----Original Message-----
> >> From: Richard M. Heiberger [mailto:rmh at temple.edu]
> >> Sent: January-04-08 11:58 AM
> >> To: 'John Fox'; jeremy.mazet at soredab.org
> >> Cc: r-help at r-project.org
> >> Subject: RE: [R] bug Rcmdr
> >>
> >> John,
> >>
> >> It's worse than a semi-colon problem.  It is an error in a self-
> >> referential
> >> statement 'a <- a+5'.  Type those lines as three separate lines in
> the
> >> Rcmdr
> >> Script Window
> >> and you still get the wrong answer.  This is from 1.3-9.
> >>
> >> > a<-2
> >>
> >> > a<-a+5
> >>
> >> > a
> >> [1] 12
> >>
> >> Rich
> >>
> >>
> >>
> >>
> >>
> >> -----Original Message-----
> >> From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-
> >> project.org] On
> >> Behalf Of John Fox
> >> Sent: Friday, January 04, 2008 08:47 AM
> >> To: jeremy.mazet at soredab.org
> >> Cc: r-help at r-project.org
> >> Subject: Re: [R] bug Rcmdr
> >>
> >> Dear Jeremy,
> >>
> >> As it says in ?Commander, the script window in the R Commander
> doesn't
> >> provide a true console to R. One of the things it doesn't do is
> handle
> >> lines
> >> with multiple commands separated by semicolons. In fact, I wonder
> what
> >> version of the Rcmdr package you're using, since (for me) in the
> latest
> >> version on CRAN (1.3-10), lines with semi-colons produce an error.
> >>
> >> I'll take a look at this problem when I have a chance, and
> accommodate
> >> semi-colons if I can do so reasonably. I don't think that it should
> be
> >> too
> >> hard.
> >>
> >> Regards,
> >>  John
> >>
> >> --------------------------------
> >> John Fox, Professor
> >> Department of Sociology
> >> McMaster University
> >> Hamilton, Ontario, Canada L8S 4M4
> >> 905-525-9140x23604
> >> http://socserv.mcmaster.ca/jfox
> >>
> >>
> >> > -----Original Message-----
> >> > From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-
> >> > project.org] On Behalf Of jeremy.mazet at soredab.org
> >> > Sent: January-04-08 6:14 AM
> >> > To: r-help at r-project.org
> >> > Subject: [R] bug Rcmdr
> >> >
> >> > Hello,
> >> >
> >> > If I run the script : "a<-2 ; a<-a+5 ; a"  whith the "submit"
> buton
> >> in
> >> > Rcmdr the result is 12 !!!
> >> > But if I run the script "a<-2 ; b<-a+5 ; b" there is no problem
> and
> >> the
> >> > result is 7.
> >> >
> >> > I think there is a bug in the function "onSubmit".
> >> >
> >> > Thanks,
> >> > 	[[alternative HTML version deleted]]
> >> >
> >> > ______________________________________________
> >> > R-help at r-project.org mailing list
> >> > https://stat.ethz.ch/mailman/listinfo/r-help
> >> > PLEASE do read the posting guide http://www.R-project.org/posting-
> >> > guide.html
> >> > and provide commented, minimal, self-contained, reproducible code.
> >>
> >> ______________________________________________
> >> R-help at r-project.org mailing list
> >> https://stat.ethz.ch/mailman/listinfo/r-help
> >> PLEASE do read the posting guide http://www.R-project.org/posting-
> >> guide.html
> >> and provide commented, minimal, self-contained, reproducible code.
> >
> > ______________________________________________
> > R-help at r-project.org mailing list
> > https://stat.ethz.ch/mailman/listinfo/r-help
> > PLEASE do read the posting guide http://www.R-project.org/posting-
> guide.html
> > and provide commented, minimal, self-contained, reproducible code.
> 
> ______________________________________________
> R-help at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide http://www.R-project.org/posting-
> guide.html
> and provide commented, minimal, self-contained, reproducible code.