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 <[EMAIL PROTECTED]> To: r-help@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 éléments minéraux > dans les écosystčmes cultivés" > > 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 : [EMAIL PROTECTED] > page infoservice: http://www.bordeaux.inra.fr/tcem > > __________m°O°m____________________________________ > > ______________________________________________ > R-help@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 [EMAIL PROTECTED] ______________________________________________ R-help@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.