r - Equivalent of 'range' in boxplot for ggplot2 -

i trying whiskers of ggplot2's geom_boxplot cover outliers. outliers de facto not displayed dots encompassed boxplot.

if using standard 'boxplot', using:

boxplot(x, range=n) 

where n large number that, instead of displaying outliers, boxplots's whiskers extend cover outliers.

how can done ggplot2? i've tried:

ggplot(mydf, aes(x=x, y=y)) + geom_boxplot(range = 5) 

note: not want discard outliers using like:

geom_boxplot(outlier.shape = na)  

the way know of compute box values this:

library(plyr) xx <- ddply(mtcars,.(cyl),             transform,             ymin = min(mpg),             ymax = max(mpg),             middle = median(mpg),             lower = quantile(mpg,0.25),             upper = quantile(mpg,0.75))  ggplot(data = xx,aes(x = factor(cyl))) +      geom_boxplot(aes(ymin = ymin,ymax = ymax,middle = middle,upper = upper,lower= lower),                  stat = 'identity') 

there warnings on ddply call, should able ignore them safely.