HH (version 1.18-1)

plot.multicomp: Multiple comparisons plot that gives independent user control over the appearance of the significant and not significant comparisons.

Description

Multiple comparisons plot that gives independent user control over the appearance of the significant and not significant comparisons. In R, both plot.multicomp plot.multicomp.hh coerce their argument to an "glht" object and plots that with the appropriate plot method. In S-Plus, plot.multicomp.hh augments the standard plot.multicomp to give additional user arguments to control the appearance of the plot.

Usage

## S3 method for class 'multicomp':
plot(x, ...) ## R only
## S3 method for class 'multicomp.hh':
plot(x, ylabel = x$ylabel, href = 0, uniform = T,
           plt.in = c(0.2, 0.9, 0.1, 0.9),
           x.label.adj=1,
           xrange.include=href,
           xlim,
           comparisons.per.page=21,
           col.signif=1, col.not.signif=1,
           lty.signif=4, lty.not.signif=4,
           lwd.signif=1, lwd.not.signif=1,
           ...,
           xlabel.print=TRUE)

Arguments

x

A "multicomp" object.

ylabel

Y label on graph.

...

other arguments to plot.multicomp.

href

reference line for the intervals. The default is 0. S-Plus only.

xrange.include

xlim will be extended to include these values. S-Plus only.

uniform

S-Plus only. Logical value, if TRUE and the plots fill more than one page, the scale will be uniform across pages.

plt.in

S-Plus only. Value for par("plt") to make better use of the space on the plotting page.

x.label.adj

S-Plus only. This is the par("adj") applied to the x-location of the y.labels on the multicomp plot.

xlim

x-range of the plot.

comparisons.per.page

The default S-Plus plot.multicomp hardwires this to 21, which allows for all pairwise comparisons of 7 levels taken 2 at a time. The HH plot.multicomp makes it a variable. Use it together with plt.in

col.signif, lty.signif, lwd.signif

Color, line type, and line width for significant comparisons. S-Plus only.

col.not.signif, lty.not.signif, lwd.not.signif

Color, line type, and line width for non-significant comparisons. S-Plus only.

xlabel.print

logical. When TRUE, the caption under the plot is printed. When FALSE, the caption under the plot is not printed. It is helpful to set this to FALSE when the multicomp plot is used as a ti

Value

• plot.multicomp plots a "multicomp" object. In S-Plus, this masks the standard plot.multicomp in order to provide additional arguments for controlling the appearance. It defaults to the standard appearance. In R, it coerces its argument to an "glht" object and plots that with the appropriate plot method.

References

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.

Heiberger, R.~M. and Holland, B. (2006, accepted). "Mean--mean multiple comparison displays for families of linear contrasts." Journal of Computational and Graphical Statistics.

See Also

mmc in both languages, glht in R, multicomp in S-Plus.

Examples

## data and ANOVA
catalystm <- read.table(hh("datasets/catalystm.dat"), header=FALSE,
                       col.names=c("catalyst","concent"))
catalystm$catalyst <- factor(catalystm$catalyst, labels=c("A","B","C","D"))

catalystm1.aov <- aov(concent ~ catalyst, data=catalystm)

catalystm.mca <-
if.R(r=glht(catalystm1.aov, linfct = mcp(catalyst = "Tukey")),
     s=multicomp(catalystm1.aov, plot=F))
if.R(s=plot(catalystm.mca),
     r=plot(confint(catalystm.mca)))