[R] bug Rcmdr

[John Fox]

Dear Duncan, Rich, and Jeremy,

Duncan has fixed the problems with semicolons and with the evaluation of
expressions with a variable on both sides of the assignment. I've
incorporated his code inTO the development version (1.3-11) of the Rcmdr
package, which is available at
<http://socserv.mcmaster.ca/jfox/Misc/Rcmdr/index.html>, both as a source
package and a Windows binary. I don't want to send the new version to CRAN
just yet, since there are many other changes as well, and the package is
insufficiently tested. You might try it out and let me know whether you
encounter any problems.

Thank you for your help,
 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: Duncan Murdoch [mailto:murdoch at stats.uwo.ca]
> Sent: January-04-08 1:16 PM
> To: John Fox
> Cc: 'Richard M. Heiberger'; jeremy.mazet at soredab.org; 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.