[R] R-Commander - pie charts menu blinded out

[John Fox]

Dear Peter and Iksmax,

To elaborate slightly, the Rcmdr tries to figure out which menu items are
appropriate in a given context, and as Peter says, requires that you have at
least one factor in the active dataset before activating the pie chart menu
item; only factors will be included in the pie-chart dialog variable list. I
suppose that this approach sometimes makes it more difficult than necessary
to do some things that people legitimately want to do, but the idea is to
protect students in introductory statistics courses -- the target audience
for the Rcmdr -- from doing foolish things. (If I were really "holier than
the prophet" I would have omitted pie charts entirely!)

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 Peter Dalgaard
> Sent: February-05-08 5:45 PM
> To: Agrarimmobilien
> Cc: R-help at r-project.org
> Subject: Re: [R] R-Commander - pie charts menu blinded out
> 
> Agrarimmobilien wrote:
> > Hello,
> >
> > I hope somebody can help me. I'm using the R-comander with
> library(Rmcdr).
> >
> > Using the menu, I added an new data-matrix . After I wanted to draw a
> pie
> > chart, but the problem is, that the pie chart menu is blinded out.
> >
> > In the concerning variable column, there are no NA -Value (is.na) .
> >
> > Anybody has a solution?
> >
> >
> Rcmdr is a bit "holier than the prophet" when it comes to insisting
> that
> categorical variables are coded as factors, so my immediate guess is
> that the variable that you're charting is actually numeric. What you
> need to do is to use the menu Data/Manage variables.../Convert
> numeric...
> 
> --
>    O__  ---- Peter Dalgaard             Øster Farimagsgade 5, Entr.B
>   c/ /'_ --- Dept. of Biostatistics     PO Box 2099, 1014 Cph. K
>  (*) \(*) -- University of Copenhagen   Denmark          Ph:  (+45)
> 35327918
> ~~~~~~~~~~ - (p.dalgaard at biostat.ku.dk)                  FAX: (+45)
> 35327907
> 
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