On Thu, 2005-09-29 at 14:34 +0200, Volker Rehbock wrote: > Is it possible to automatically display the underlying values of a > piechart/barplot in the graphic? If so, which package/function/argument do I > need for it? > Thanks, > Volker
Using pie charts are not a particularly good way of displaying data, even though the pie() function is available in R. See ?pie for more information on this. For barplots, the following provide two approaches: # Place the bar values above the bars # Note that I set 'ylim' to make room for # the text labels above the bars vals <- 1:5 names(vals) <- LETTERS[1:5] mp <- barplot(vals, ylim = c(0, 6)) text(mp, vals, labels = vals, pos = 3) # Place the bar values below the x axis vals <- 1:5 names(vals) <- LETTERS[1:5] mp <- barplot(vals) mtext(side = 1, at = mp, text = vals, line = 3) Note that barplot() returns the bar midpoints, so you can use these values for annotation placement. See ?barplot, ?text and ?mtext for more information. HTH, Marc Schwartz ______________________________________________ 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
