Normally, vjsust = adjust the label distanace with the max y value, which is not beautiful when the sd is different, is it possible to adjust it with an equal relative distance with upper error bar?
In the following example, the a and b should be move down and c up, how to plot it?
df <- data.frame(dose=c("D0.5", "D1", "D2"),
len=c(4.2, 10, 29.5), sd = c(0.2, 2, 5),
label = c('a', 'b', 'c'))
ggplot(df, aes(x = dose, y = len)) +
geom_errorbar(aes(ymin = len, ymax = len + sd), width=.1, position=position_dodge(.6)) +
geom_bar(position = position_dodge(), stat="identity", width=.4)+
geom_text(aes(label = label, angle = 0),vjust = -2.5)
>Solution :
Use the y parameter in the geom_text aestethics to set up the position of the labels according to the error bars:
ggplot(df, aes(x = dose, y = len)) +
geom_errorbar(aes(ymin = len, ymax = len + sd), width=.1, position=position_dodge(.6)) +
geom_bar(position = position_dodge(), stat="identity", width=.4)+
geom_text(aes(y = len + sd, label = label, angle = 0),vjust = -2.5) +
ylim(0, 40)
