Re: [Rd] Help page of colors() : add a new example ?

From: Millot Gael <Gael.Millot_at_curie.fr>
Date: Tue, 31 Jan 2012 09:32:14 +0000

Very nice graphic indeed !
One way or another, it would be useful to have such examples in the help page of colors().

Thanks for your time !!

Best,

Gael.

> -----Message d'origine-----
> De : Dennis Murphy [mailto:djmuser_at_gmail.com]
> Envoyé : lundi 30 janvier 2012 19:51
> À : Millot Gael
> Cc : r-devel_at_r-project.org
> Objet : Re: [Rd] Help page of colors() : add a new example ?
>
> Here's another graphic that shows R colors in a table, from Earl Glynn
> of the Stowers Institute of Medicine:
>
> http://research.stowers-institute.org/efg/R/Color/Chart/
>
> If the link doesn't bring up the page (my didn't initially), Google on
> 'Earl Glynn Stowers' and look for the link 'Chart of R Colors'.
>
> Dennis
>
>
> On Mon, Jan 30, 2012 at 6:46 AM, Millot Gael <Gael.Millot_at_curie.fr> wrote:
> > Dear all,
> >
> > May I suggest to add an example in the help page of the colors() function ?
> > The following code could be useful to easily choose any color from colors() :
> >
> > ## Millot G. (2011), p.71.
> > ## Figure displaying all the 657 built-in color names of colors().
> > palette(colors())
> > tempo<-NULL
> > for(i in 14:1){tempo<-c(tempo, rep(i,50))}
> > windows(width=10) # replace by quartz(width=10) for MacOS and by
> X11(width=10) for Linux
> > par(ann=FALSE, xaxt="n", yaxt="n", bty="n")
> > plot(rep(1:50,14)[1:657], tempo[1:657], pch=22, bg=1:657, cex=1.5, bty="n")
> > par(xpd=TRUE)
> > axis(side=2, at=14:1, labels=, cex.axis=1.5, srt=90)
> > text(rep(-2, 14), 14:1, as.character((0:13)*50+1), srt=0, cex=1)
> > text(c(10,20,30,40,50), rep(-0.5,5), c(10,20,30,40,50), srt=0, cex=1)
> >
> > ## palette(colors()) allow to replace the color names by the numbers indicated
> > ## in the figure.
> > palette(colors())
> > plot(1, col=630, pch=16, cex=10) # 630 is "tomato"
> >
> > This code comes from the page 71 of the book I published in french:
> > Millot G. Comprendre et réaliser les tests statistiques à l'aide de R, 2nd edition.
> De Boeck editions, Bruxelles . 2011, 767 pages.
> >
> > I wrote it since my students usually complain about the difficulty to select a color
> > from colors() when the names are displayed.
> >
> > Kind regards,
> >
> > Gael Millot.
> >
> > ______________________________________________
> > R-devel_at_r-project.org mailing list
> > https://stat.ethz.ch/mailman/listinfo/r-devel



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