Compaison QQ Plot

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Description

Produces side-by-side QQ plots. Aa optional simulated confidence envelope can be included in each plot.

Usage

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qqPlot.lmfm(x, fun, envelope = TRUE, half.normal = FALSE, n.samples = 250,
            level = .95, id.n = 3, qqline = TRUE, ...)

Arguments

x

an lmfm object.

fun

a function to extract the appropriate quantity from x.

envelope

a logical value. If TRUE a level confidence envelope is simulated for each QQ plot.

half.normal

a logical value. If TRUE the plot is drawn using the absolute values.

n.samples

a positive integer value giving the number of samples to compute in the simulation of the confidence envelope.

level

a numeric value between 0 and 1 specifying the confidence level for the envelope.

id.n

a non-negative integer value specifying the number of extreme points to identify.

qqline

a logical value. If TRUE, a QQ line is included in the plot.

...

additional arguments are passed to xyplot.

Value

the trellis object is invisibly returned.