trellis.object {lattice}R Documentation

Lattice Display Object

Description

This class of objects is returned by Lattice display functions, and is usually plotted by default by its `print' method.

Value

A ``trellis'' object is a list with the following components:

formula formula that was used in the call. Not used
fname function that produced the object. Not used
aspect.fill logical specifying whether aspect==``fill''
aspect.ratio numeric, aspect ratio to be used IF aspect.fill is FALSE
as.table logical, whether rows are drawn top to bottom
cond The conditioning variables. Not used
key list defining the key to be drawn
layout layout of the trellis. Must be of length 3, but first element can be 0, in which case the second element is taken to be the desired number of panels per page and a `nice' layout is calculated based on aspect ratio, screen dimensions etc.
page the page function
panel the panel function
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. If skip=T for a particular panel, then the corresponding element is FALSE instead of a list.
panel.args.common a list containing the arguments common to all the panel functions in name=value form
par.strip.text list containing graphical parameters cex, col, font for the strip labels
skip logical vector, not used
strip the function to draw the strip labels
main NULL, or list with components label, cex, col, font
sub same as main
xlab same as sub
ylab same as xlab
x.draw logical specifying whether x-axis is to be drawn
y.draw logical specifying whether y-axis is to be drawn
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, same as x.scales
x.between numeric vector of interpanel x-space
y.between numeric vector of interpanel y-space
x.relation.same logical, whether x-relation = "same"
y.relation.same logical, whether y-relation = "same"
x.alternating numeric vector, with components 0, 1 or 2, defining on which side x-axis labels are to be drawn
y.alternating numeric vector, with components 0, 1 or 2, defining on which side y-axis labels are to be drawn
fontsize.normal default fontsize
fontsize.small fontsize for the axis labels, can be further modified by the cex component of scales.

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