lattice (version 0.17-12)

panel.qqmathline: Useful panel function with qqmath

Description

Useful panel function with qqmath. Draws a line passing through the points (usually) determined by the .25 and .75 quantiles of the sample and the theoretical distribution.

Usage

panel.qqmathline(x, y = x,
                 distribution = qnorm,
                 p = c(0.25, 0.75),
                 qtype = 7,
                 groups = NULL, 
                 ...)

Arguments

x

The original sample, possibly reduced to a fewer number of quantiles, as determined by the f.value argument to qqmath

y

an alias for x for backwards compatibility

distribution

quantile function for reference theoretical distribution.

p

numeric vector of length two, representing probabilities. Corresponding quantile pairs define the line drawn.

qtype

the type of quantile computation used in quantile

groups

optional grouping variable. If non-null, a line will be drawn for each group.

...

other arguments.

See Also

prepanel.qqmathline, qqmath, quantile