R: Plot all main effects and twoway interactions in a...
interaction2wt
R Documentation
Plot all main effects and twoway interactions in a multifactor design
Description
The main diagonal
displays boxplots for the main effects of each factor. The
off-diagonals show the interaction plots for each pair of factors.
The i,j panel shows the same factors as the j,i but with
the trace- and x-factor roles interchanged.
The object on which method dispatch is carried out.
For the "formula" method, a formula describing the response
variable and factors.
The formula is generally of the form y ~ g1 + g2 + ....
There may be one or more factors in the formula.
For the "default" method, data.frame of factors. This
is usually constructed by formula method from the input
data and the input formula.
data
For the formula method, a data frame containing values for
any variables in the formula. In the R version,
if not found in data, or if
data is unspecified, the variables are looked for in the
environment of the formula.
responselab
Character name of response variable, defaults to
the name of the response variable in the formula.
responselab.expression
plotmath or character name
of response variable, defaults to responselab.
For the "default" method, the
response variable. This is usually constructed by
formula method from the input data and the input formula.
simple
logical. TRUE if simple effects are to be
displayed. Arguments simple.offset, simple.scale, and
col.by.row may also be needed. See
panel.interaction2wt for details.
box.ratio
xyplot.
Trellis/Lattice arguments. Default values are set by the
the formula method. The user may override the defaults.
See also
xyplot.
relation
trellis argument.
x.relation
x value of relation argument.
y.relation
y value of relation argument.
digits
doesn't do anything at the moment
x.between
x value of between argument.
y.between
y value of between argument.
between
trellis/lattice between argument.
If used, between has precedence over both the
x.between and y.between arguments.
cex
S-Plus: changes the size of the median dot in the
boxplots. R: doesn't do anything.
panel.input
panel function. Default is panel.interaction2wt.
label.as.interaction.formula
logical. If TRUE, each
panel has a single strip label of the form y ~ a | b. If
FALSE, each panel has a pair of strip labels, one for the
trace factor and one for the x factor.
strip.input
strip function. Default depends on the value of
label.as.interaction.formula.
par.strip.text.input
par.strip.text argument.
scales.additional
additional arguments to scales
argument of interaction.positioned.
main.in
Text of main title.
xlab
No effect.
ylab
No effect.
main.cex
cex for main title.
key.cex.title
cex key title. Defaults to cex for
xlab.
key.cex.text
cex group names in key. Defaults to cex for
axis.text.
factor.expressions
Expressions for titles of keys and
xlab for each column. Defaults to the names of the factors in
the input formula.
rot
Rotation of x tick labels and y tick labels. Only 0 and 90
will look good.
simple.pch
Named list containing plotting characters for each
level of one or more of the factors. simple.pch is used only when
simple==TRUE. If the argument simple.pch is missing,
then the integers for the levels of the factors are used. The
characters are used for the median of the box plots in the diagonal
panels. They match the trace factor of the interaction panel in the
same column of the display.
Value
"trellis" object containing the plot.
Author(s)
Richard M. Heiberger <rmh@temple.edu>
References
Heiberger, Richard M. and Holland, Burt (2015).
Statistical Analysis and Data Display: An Intermediate Course
with Examples in R, Second Edition.
Springer Texts in Statistics. Springer.
ISBN 978-1-4939-2121-8.
Heiberger, Richard M. and Holland, Burt (2004b).
Statistical Analysis and Data Display: An Intermediate Course
with Examples in S-Plus, R, and SAS.
Springer Texts in Statistics. Springer.
ISBN 0-387-40270-5.