Thanks for your help Peter but the red marks on boxplot do not correspond to ex2 dataframe actually, it reproduce on each panel the same marks that is to say the 3 first lines of ex2 So this is not correct
Christophe On Mon, Sep 27, 2010 at 6:18 PM, Peter Ehlers <ehl...@ucalgary.ca> wrote: > On 2010-09-27 4:54, Christophe Bouffioux wrote: > >> bwplot(v2 ~ v1 | z, data = ex3, layout=c(3,2), >> pch = "|", >> par.settings = list( >> plot.symbol = list(alpha = 1, col = "transparent",cex = 1,pch = >> 20)), >> panel = function(x, y){ >> panel.bwplot(x, y) >> X<- tapply(ex3$v1b, ex3[,c(1,2)], max) >> Y<- seq(length(unique(ex3[,c(1,2)]))) >> panel.points(X, Y, pch = 17, col = "red") >> }) >> >> > Perhaps this is what you're trying to achieve: > > > bwplot(v2 ~ v1 | z, data = ex3, layout=c(3,2), > panel = function(x, y){ > panel.bwplot(x, y, pch="|") > X <- tapply(ex3$v1b, ex3[, 1:2], max) > Y <- seq(nrow(unique(ex3[, 1:2]))) > > panel.points(X, Y, pch = 17, col = "red") > }) > > (I didn't see any need for your par.settings.) > > I'm not crazy about the way you define X,Y. I think > I would augment the data frame appropriately instead. > > -Peter Ehlers > [[alternative HTML version deleted]] ______________________________________________ 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.