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xyplot2: Extension of XYPLOT
Description
Extend
xyplot
to superpose one or more symbols to each panel.
Usage
xyplot2(formula, data, type = "l", ...)
Arguments
formula
a two-sided formula as accepted in
xyplot
data
a list of data frames. Each component shall be able to evaluate the vatiables appearing in
formula
type
a vector of characters to indicate what type of plots are to draw. Default is line.
...
any options as accepted in
xyplot
Value
On each panel, several plot types, the length of
data
, are superposed.