interaction2wt {HH} | R Documentation |
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.
interaction2wt(x, ...) ## S3 method for class 'formula': interaction2wt(x, data = sys.parent(), responselab, ...) ## Default S3 method: interaction2wt(x, response.var, responselab = deparse(substitute(response.var)), responselab.expression = responselab, relation = list(x = "same", y = "same"), x.relation = relation$x, y.relation = relation$y, digits = 3, x.between=if (label.as.interaction.formula) 0 else 1, y.between=if (label.as.interaction.formula) 0 else 1, between, cex = 0.75, rot=c(0,0), panel.input = panel.interaction2wt, strip.input = if (label.as.interaction.formula) strip.default else strip.interaction2wt, par.strip.text.input = trellis.par.get()$add.text, scales.additional, main.in = paste(responselab, ": main effects and 2-way interactions", sep = ""), xlab = list(labels = ""), ylab = list(labels = ""), simple=FALSE, box.ratio=if (simple) .32 else 1, label.as.interaction.formula=TRUE, ..., main.cex, key.cex.title=trellis.par.get()$par.xlab.text$cex, key.cex.text=trellis.par.get()$axis.text$cex, factor.expressions=names.x )
Arguments when x
is a formula.
x |
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 .
|
... |
additional arguments, primarily trellis arguments. |
response.var |
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 |
bwplot in R or
bwplot in S-Plus. |
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. |
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. |
"trellis"
object containing the plot.
Richard M. Heiberger <rmh@temple.edu>
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.
vulcan <- read.table(hh("datasets/vulcan.dat"), header=TRUE) vulcan$filler <- factor(vulcan$filler) position(vulcan$raw) <- (1:4)+.5 position(vulcan$pretreat) <- 2:4 interaction2wt(wear ~ filler + pretreat + raw, data=vulcan, par.strip.text=list(cex=.8)) interaction2wt(wear ~ filler + raw, data=vulcan, simple=TRUE) interaction2wt(wear ~ filler + raw, data=vulcan, simple=TRUE, simple.scale=c(filler=.15, raw=.2)) if.R(r={ ToothGrowth <- ToothGrowth ## local copy ToothGrowth$dose <- positioned(ToothGrowth$dose) ## modify local copy print( anova(aov(len ~ supp*dose, data=ToothGrowth)) ) print( interaction2wt(len ~ supp + dose, data=ToothGrowth) ) esoph=esoph esoph$rate=with(esoph, ncases/ncontrols) position(esoph$alcgp) <- 2:5 position(esoph$tobgp) <- 2:5 print( interaction2wt(rate ~ agegp + alcgp + tobgp, esoph, rot=c(90,0), par.strip.text=list(cex=.8)) ) old.cex <- trellis.par.set(par.xlab.text=list(cex=.8)) print( interaction2wt(rate ~ agegp + alcgp + tobgp, esoph, rot=c(90,0), par.strip.text=list(cex=.8), factor.expressions=c( agegp=expression(Age~~(years)), alcgp=expression(Alcohol~ bgroup("(",scriptstyle(frac(gm, day)),")")), tobgp=expression(Tobacco~ bgroup("(",scriptstyle(frac(gm, day)),")"))), responselab.expression="Cancer\nRate", main.in="Esophogeal Cancer Rate ~ Alcohol Consumption + Tobacco Consumption", main.cex=1.2) ) par(old.cex) esoph.aov <- aov(rate ~ agegp + alcgp + tobgp, data=esoph) print( anova(esoph.aov) ) }, s={})