Thanks, it was a matter of reshaping the data matrix as I usually have it, ie: datos <- data.frame(x=abs(round(rnorm(100,10,5))),y=abs(round(rnorm(100,2,1))),f=factor(round(runif(100,1,3))))
to become: datos2 <- data.frame(V1=c(datos[,1],datos[,2]),"VAR"=c(rep("x",100),rep("y",100)),f=factor(c(datos[,3],datos[,3]))) and then require(lattice) barchart(V1~VAR|f,data=datos2) I get horizontal lines in the bars that I do not understand, though. Agus Deepayan Sarkar escribió: > On 3/26/08, Agustin Lobo <[EMAIL PROTECTED]> wrote: >> Dear list, >> >> Is there any way of making barplots as a Trellis graphic? > > Yes, the function to use is 'barchart'. > > -Deepayan > -- Dr. Agustin Lobo Institut de Ciencies de la Terra "Jaume Almera" (CSIC) LLuis Sole Sabaris s/n 08028 Barcelona Spain Tel. 34 934095410 Fax. 34 934110012 email: [EMAIL PROTECTED] http://www.ija.csic.es/gt/obster ______________________________________________ R-help@r-project.org 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.