...and what if I need to plot another vertical line for showing also the means for each panel? by simply adding another call to panel.abline () seems not producing a correct result for each panel
# medians and means for each panel: dotplot(variety ~ yield | site, data = barley, scales=list(x=list(log=TRUE)), layout = c(1,6), panel = function(x,y,...) { panel.dotplot(x,y,...) median.values <- median(x) panel.abline(v=median.values, col.line="red") mean.values <- mean(x) panel.abline(v=mean.values, col.line="red") }) In the dataset I'm currently working on (which is not the above mentioned example) I've got a wrong plottting of the means for each panel, what I'm missing? thanks -- View this message in context: http://r.789695.n4.nabble.com/how-to-add-a-vertical-line-for-each-panel-in-a-lattice-dotplot-with-log-scale-tp4632513p4632678.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ 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.