In the past, I have been able to create boxplots using ggplot2 by providing the lower whisker, lower quantile, median, upper quantile, and upper whisker along with x-axis la
This works using ggplot2 version 0.9.1 (and R 2.15.0)
library(ggplot2)
DF <- data.frame(x=c("A","B"), min=c(1,2), low=c(2,3), mid=c(3,4), top=c(4,5), max=c(5,6))
ggplot(DF, aes(x=x, ymin = min, lower = low, middle = mid, upper = top, ymax = max)) +
geom_boxplot(stat = "identity")
See the "Using precomputed statistics" example here