This class of objects is returned by high level lattice functions, and
is usually plotted by default by its
print
method.
Deepayan Sarkar Deepayan.Sarkar@R-project.org
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.strip.text
, strip
, skip
, xlab
ylab
, par.settings
, lattice.options
and
plot.args
. Some other typical components are:
formula
the Trellis formula used in the call
index.cond
list with index for each of the conditioning variables
perm.cond
permutation of the order of the conditioning variables
aspect.fill
logical, whether aspect
is "fill"
aspect.ratio
numeric, aspect ratio to be used if aspect.fill
is
FALSE
call
call that generated the object.
condlevels
list with levels of the conditioning variables
legend
list describing the legend(s) to be drawn
panel.args
a 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.common
a list containing the arguments common to all the panel functions
in name=value
form
x.scales
list describing x-scale, can consist of several other lists,
paralleling panel.args, if x-relation is not "same"
y.scales
list describing y-scale, similar to x.scales
x.between
numeric vector of interpanel x-space
y.between
numeric vector of interpanel y-space
x.limits
numeric vector of length 2 or list, giving x-axis limits
y.limits
similar to x.limits
packet.sizes
array recording the number of observations in each packet
Lattice
, xyplot
,
print.trellis