Hi
Well, you did not specified what you have tried to do and how did you
fail but
On 2 Oct 2006 at 16:41, Christophe Nguyen wrote:
Date sent: Mon, 02 Oct 2006 16:41:29 +0200
From: Christophe Nguyen <Christophe.Nguyen at bordeaux.inra.fr>
To: r-help at stat.math.ethz.ch
Subject: [R] Problems with graphics
> Dear all,
> I am a SAS user, who's trying R. I am a little bit lost for graphics.
> What is the simplest way for plotting y as a function of x with one
> symbol (line or dot) for each level of a class variable z (for SAS
If z is factor
plot(x,y pch=as.numeric(z), ...)
otherwise you need to change it to one.
BTW, you can use the similar approach with lines and points - col,
lwd, cex,... and othe parameters.
> langage= plot x*y=z). Can I add vertical bars for standard deviation
there are various options, one is to use arrows with angle=90.
arrows(x,y,x, y+ystd, angle=90)
> stored in a separate variable (say ystd). Finally, is it possible to
> do all this with xyplot function arranging plots according to A and B
> factor: xyplot(y~x|A*B) with as many plots and symbol as there is
that is completely different story and you probably need to elaborate
your own panel.function.
HTH
Petr
> levels in the z variable for each panel? Thanks for the help. Chris
>
> --
> ___________________________________________________
>
> Christophe NGUYEN
>
> UMR 1220 INRA-ENITAB
> Transfert sol-plante et cycle des ?l?ments min?raux
> dans les ?cosyst?mes cultiv?s"
>
> Centre INRA de Bordeaux-Aquitaine
> 71, avenue Edouard Bourlaux, BP 81
> 33883 Villenave d'Ornon, FRANCE
>
> Tel : 00 33 (0)5 57 12 25 07
> Fax : 00 33 (0)5 57 12 25 15
>
> email : Christophe.Nguyen at bordeaux.inra.fr
> page infoservice: http://www.bordeaux.inra.fr/tcem
>
> __________m?O?m____________________________________
>
> ______________________________________________
> R-help at stat.math.ethz.ch 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.
Petr Pikal
petr.pikal at precheza.cz