x (and
y where appropriate) variables are plotted with different
graphical parameters for each distinct value of the grouping variable.panel.superpose(x, y = NULL, subscripts, groups,
panel.groups = "panel.xyplot",
col, col.line, col.symbol,
pch, cex, font,
fontface, fontfamily,
lty, lwd, alpha,
type = "p",
...,
distribute.type = FALSE)
panel.superpose.2(..., distribute.type = TRUE)panel.superpose and panel.superpose.2 differ essentially
in how type is interpreted by default. The default behaviour
in panel.superpose is the opposite of that in S, which is the
same as that of panel.superpose.2.panel.groups gives different
types of plots, for example panel.xyplot,
panel.dotplot and panel.linejoin (This can
be used to produce interaction plots). See Lattice for an overview of the package.