lattice (version 0.2-3)

qq: Quantile-Quantile Plots of Two Samples

Description

Quantile-Quantile plots for comparing two Distributions

Usage

qq(formula, f.value = ppoints, ...)

Arguments

formula

formula of the form y ~ x | g1 * g2 * ..., where x must be a numeric, and y can be a factor, shingle, character or numeric vector, with the restriction that there must be exactly two levels of y

f.value

function of a single integer (representing sample size), returning a vector of probabilities corresponding to which quantiles should be plotted.

...

Other arguments

Value

• An object of class trellis, by default plotted by print.trellis.

synopsis

qq(formula, aspect="fill", as.table=FALSE, between=list(x = 0, y = 0), data, groups=NULL, key=NULL, layout, main=NULL, page=NULL, panel=panel.qq, par.strip.text, prepanel, scales, skip=FALSE, strip=strip.default, sub=NULL, subscripts=!missing(groups), subset, xlab, xlim, ylab, ylim, ...)

See Also

trellis.args, panel.qq, Lattice

Examples

data(singer)
qq(voice.part ~ height, aspect = 1, data = singer,
   subset = (voice.part == "Bass 2" | voice.part == "Tenor 1"))