panel.dotplot.tb {HH}

Dotplot with evenly spaced tiebreakers.

Description

Dotplot with evenly spaced tiebreakers. Multiple hits on a specific x value are stacked.

Usage

panel.dotplot.tb(x, y, factor=.1,
                 jitter.data=TRUE, horizontal=TRUE,
                 max.freq=max(sapply(subsets, length)),
                 ...)

Arguments

x, y

See xyplot.

factor

jitter factor, see xyplot. Increment is factor/max.freq where max.freq is the maximum number of duplicates of any x value in any y group.

jitter.data, horizontal

Always TRUE.

max.freq

maximum number of observation at any combination of response values, factor levels, and group levels. If the formula includes one or more conditioning factors, then the user is responsible for providing a value for max.freq.

...

Other arguments for xyplot.

Details

Creates (possibly grouped) Dotplot of x against y. y is the ‘factor’.

Warning

If the formula includes one or more conditioning factors, then the user is responsible for providing a value for max.freq. The default behavior is a different max.freq for each panel in a multi-panel display.

Author(s)

Richard M. Heiberger

Maintainer: Richard M. Heiberger <[e-mail]>

Examples

x <- c(1,1,2,2,2,5,4,2,1,5)
y <- factor(letters[rep(1:2, 5)])

dotplot(x, panel=panel.dotplot.tb)
dotplot(x, panel=panel.dotplot.tb, factor=.2)
dotplot(y ~ x, panel=panel.dotplot.tb)
dotplot(y ~ x, panel=panel.dotplot.tb, cex=1.5, factor=.15)



quiz <- data.frame(scores=sample(10, 360, replace=TRUE),
                   date=rep(rep(c("0902", "0916", "0930"), c(40,40,40)), 3),
                   section=rep(
                     c("Stat1-3", "Stat1-5", "Stat1-8"),
                     c(120,120,120)))

dotplot(date ~ scores | section, data=quiz,
        panel=panel.dotplot.tb, factor=.5)

dotplot(date ~ scores | section, data=quiz,
        panel=panel.dotplot.tb, factor=.5,
        layout=c(1,3), between=list(y=1),
        main='Three quizzes for three sections of Stat 1')


## If the formula includes one or more conditioning factors, then the
## user is responsible for providing a value for the argument max.freq
##
a <- rep(1, 10)
z <- c(1,1,2,2,2,3,2,3,1,1)
g <- LETTERS[c(1,1,1,1,1,2,2,2,2,2)]

print(split=c(1,1,2,1), more=TRUE,
dotplot( a ~ z | g, panel=panel.dotplot.tb,
        factor=.6, cex=1.5, layout=c(2,1),
        main="different scaling in each panel")
)

print(split=c(2,1,2,1), more=FALSE,
dotplot( a ~ z | g, panel=panel.dotplot.tb, max.freq=3,
        factor=.6, cex=1.5, layout=c(2,1),
        main="same scaling in each panel")
)