How to label a barplot bar with positive and negative bars with ggplot2

ggplot2, r

Solution

This does the trick

library(plyr)
library(ggplot2)
library(scales)
dtf <- data.frame(x = c("ETB", "PMA", "PER", "KON", "TRA", 
                  "DDR", "BUM", "MAT", "HED", "EXP"),
                  y = c(.02, .11, -.01, -.03, -.03, .02, .1, -.01, -.02, 0.06))
ggplot(dtf, aes(x, y)) +
  geom_bar(stat = "identity", aes(fill = x), legend = FALSE) + 
  geom_text(aes(label = paste(y * 100, "%"),
               vjust = ifelse(y >= 0, 0, 1))) +
  scale_y_continuous("Anteil in Prozent", labels = percent_format()) +
  opts(axis.title.x = theme_blank())

Problem

I'm trying to plot a labeled barplot with ggplot2 with positive and negative bars. That works so far, but I would like to set the label outside of the bar, so that it is above or under the bar. I tried to set an adjustment in `vjust = c(x1,...,xn)` where `x` is a positive or negative value according to the value of the bar in `geom_text()`. This doesn't work. I just got the Error message Error: "When setting aesthetics, they may only take one value. Problems: vjust" With the normal plot command that works. I want to replicate this command in ggplot2: ``` xpos <- barplot(d, col=mycols, main='Verteilung in Dresden 2004', ylab='Anteil in %', xlab='Milieu', names.arg=l, cex.axis=0.7, cex.names=0.7, ylim=c(0,max(d)+0.05)) boxed.labels(xpos,d+0.02,sprintf('%d%s', d*100, '%'), bg='transparent', border=FALSE, cex=0.7) ``` So that it looks like this just in nice... ;-) Does someone have any suggestions? Thank's for y'all help.

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