trellis.object: A Trellis Plot Object
Description
This class of objects is returned by high level lattice display
functions, and is usually plotted by default by its `print' method.Value
- A trellis object, as returned by high level lattice functions like
xyplot, is a list with the ``class'' attribute set to
``trellis''. Many of the components of this list are simply the
arguments to the high level function that produced the object. Among
them are: as.table, layout, page, panel,
prepanel, main, sub, par.settings,
par.strip.text, strip, skip, xlab and
ylab. Some other typical components are:
{
list with index for each of the conditioning variables
} perm.condpermutation of the order of the conditioning variablesaspect.filllogical, whether aspect is ``fill''aspect.rationumeric, aspect ratio to be used if aspect.fill is
FALSEcallcall that generated the object.condlevelslist with levels of the conditioning variableslegendlist describing the legend(s) to be drawnpanel.argsa list as long as the number of panels, each element being a list
itself, containing the arguments in named form to be passed to the
panel function in that panel.panel.args.commona list containing the arguments common to all the panel functions
in name=value formx.scaleslist describing x-scale, can consist of several other lists,
paralleling panel.args, if x-relation is not ``same''y.scaleslist describing y-scale, similar to x.scalesx.betweennumeric vector of interpanel x-spacey.betweennumeric vector of interpanel y-spacex.limitsnumeric vector of length 2 or list, giving x-axis limitsy.limitssimilar to x.limits