ladderplot: Ladder Plot

In plotrix: Various Plotting Functions

Ladder Plot

Description

Makes a ladder plot, similar to parcoord but with more flexibility and graphical options.

Usage

ladderplot(x, ...)
## Default S3 method:
ladderplot(x, scale=FALSE, col=1, pch=19, lty=1, 
xlim=c(0.5, ncol(x) + 0.5), ylim=range(x), vertical = TRUE, ordered=FALSE,...)

Arguments

x	A matrix or data frame with at least 2 columns.
scale	Logical, if the original data columns should be scaled to the unit (0-1) interval.
col	Color values to use for rows of ‘⁠x⁠’. If longer than 1, its value is recycled.
pch	Point type to use. If longer than 1, its value is recycled.
lty	Line type to use. If longer than 1, its value is recycled.
xlim, ylim	Limits for axes.
vertical	Logical, if the orientation of the ladderplot should be vertical or horizontal.
ordered	Logical, if the columns in ‘⁠x⁠’ should be ordered.
...	Other arguments passed to the function stripchart.

Details

The function uses stripchart to plot 1-D scatter plots for each column in ‘⁠x⁠’. Then points are joined by lines for each rows of ‘⁠x⁠’.

Value

Makes a plot as a side effect. Returns ‘⁠NULL⁠’ invisibly.

Author(s)

Peter Solymos <[e-mail]>

See Also

lines, points, stripchart

Almost identical function: parcoord

Examples

x<-data.frame(A=c(1:10), B=c(2:11)+rnorm(10))
y<-data.frame(x, C=c(1:10)+rnorm(10))
opar <- par(mfrow=c(1,3))
ladderplot(x)
ladderplot(x, col=1:10, vertical=FALSE)
ladderplot(y, col=1:10)
par(opar)

## examples from parcoord
## Not run: 
if (require(MASS)) {
opar <- par(mfrow=c(2,3))
z1 <- state.x77[, c(7, 4, 6, 2, 5, 3)]
parcoord(z1, main="parcoord state.x77")
ladderplot(z1, pch=NA, scale=TRUE, main="ladderplot state.x77 original")
ladderplot(z1, main="ladderplot state.x77 original")
ir <- rbind(iris3[,,1], iris3[,,2], iris3[,,3])
z2 <- log(ir)[, c(3, 4, 2, 1)]
parcoord(z2, col = 1 + (0:149))
ladderplot(z2, scale=TRUE, col = 1 + (0:149),
    main="ladderplot iris original")
ladderplot(z2, col = 1 + (0:149))
par(opar)
}

## End(Not run)

plotrix documentation built on Nov. 10, 2023, 5:07 p.m.