[R] Windows / Accented characters / pb with makename

[Charles RAUX]

Thank you for the hint (I didn't know makename). In fact contrary to 
what is indicated in help makename doesn't give legal R names 
(at least under Windows).
See below:

> make.names("aéaéaéaùàééé")
[1] "aéaéaéaùàééé"

2) What is a "legal R name"? (found nowhere in FAQ, help...)

Le 28 Aug 00 à 12:48, Peter Dalgaard BSA écrivait:

> To:            "Charles RAUX" <Charles.Raux at let.ish-lyon.cnrs.fr>
> Cc:            r-help <r-help at stat.math.ethz.ch>
> Subject:       Re: [R] Windows / RODBC / Accented characters
> From:          Peter Dalgaard BSA <p.dalgaard at biostat.ku.dk>
> Date:          28 Aug 2000 12:48:29 +0200

> "Charles RAUX" <Charles.Raux at let.ish-lyon.cnrs.fr> writes:
> 
> > A disturbing behaviour of R: an import of data using RODBC library 
> > (Windows 98, R 1.1.1) recognizes accented characters in variables 
> > names but these can't be manipulated further. See below:
> > > library(Rodbc)
> > > ch<-odbcConnect("Paradox Files")
> > > pollut<-sqlFetch(ch,Pollutio)
> > > pollut
> >   Mortalité Densité Pollution
> > 1        82     600       110
> > 2        97     960       140
> > 3        76     570        90
> > ......
> > > attach(pollut)
> > > summary(Pollution)
> >    Min. 1st Qu.  Median    Mean 3rd Qu.    Max. 
> >      90     120     160     160     190     250 
> > > summary(Mortalité)
> > Error: syntax error
> > 
> > Is there another solution than changing the names of the fields under 
> > Paradox. Or RODBC package should be enhanced to automatically change 
> > the accented characters?
> 
> The quick way out would be to say
> 
> pollut <- sqlFetch(ch,Pollutio)
> names(pollut) <- c("Mortalitee", "Densitee", "Pollution")
> attach(pollut)
> 
> Does make.names work on Windows? (I.e. does it agree with the parser
> about what is a valid name?) If it does, then a more general solution
> would be 
> 
> names(pollut) <- make.names(names(pollut))
> 
> although it would make the names a bit uglier: "Mortalit.", "Densit."
> -- 
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