Hmisc (version 5.3-0)

histbackback: Back to Back Histograms

Description

Takes two vectors or a list with x and y components, and produces back to back histograms of the two datasets.

Usage

histbackback(x, y, brks=NULL, xlab=NULL, axes=TRUE, probability=FALSE,
             xlim=NULL, ylab='', ...)

Value

a list is returned invisibly with the following components:

left

the counts for the dataset plotted on the left.

right

the counts for the dataset plotted on the right.

breaks

the breakpoints used.

See Also

hist, histogram

Examples

options(digits=3)
set.seed(1)
histbackback(rnorm(20), rnorm(30))


fool <- list(x=rnorm(40), y=rnorm(40))
histbackback(fool)
age <- rnorm(1000,50,10)
sex <- sample(c('female','male'),1000,TRUE)
histbackback(split(age, sex))
agef <- age[sex=='female']; agem <- age[sex=='male']
histbackback(list(Female=agef,Male=agem), probability=TRUE, xlim=c(-.06,.06))