DAAG: overlapDensity – R documentation

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DAAG

overlapDensity

Overlapping Density Plots

Description

Densities for two distinct samples are estimated and plotted.

Usage

overlapDensity(x0, x1, ratio = c(0.05, 20), ratio.number = FALSE,
          plotvalues = c("Density", "Numbers"), gpnames = c("Control", "Treatment"),
          cutoffs = c(lower = TRUE, upper = TRUE), bw = FALSE,
          xlab = "Score", ylab = NULL,
          col = 1:2, lty = 1:2, lwd = c(1, 1))

overlap.density(x0, x1, ratio = c(0.05, 20), ratio.number = FALSE,
          plotvalues = c("Density", "Numbers"), gpnames = c("Control", "Treatment"),
          cutoffs = c(lower = TRUE, upper = TRUE), bw = FALSE,
          xlab = "Score", ylab = NULL,
          col = 1:2, lty = 1:2, lwd = c(1, 1))

Arguments

`x0`	control group measurements
`x1`	treatment group measurements
`ratio`	if not `NULL`, the range within which the relative number per unit interval (`ratio.number=TRUE`) or relative probability density (`ratio.number=FALSE`) of observations from the two groups are required to lie will be used to determine lower and upper bounds on the values of `x0` and `x1`. [The relative numbers at any point are estimated from (density1n1)/(density0x0)]
`ratio.number`	If TRUE (default), then `ratio` is taken as the ratio of number of points per unit interval
`plotvalues`	If set to `Number` then the y-axis scale is chosen so that total area undere the curve is equal to the sample size; otherwise (`plotvalues="Density"`) total area under each cueve is 1. Any other setting does not give a plot.
`gpnames`	Names of the two samples
`cutoffs`	logical vector, indicating whether density estimates should be truncated below (lower=TRUE) or above (upper=TRUE)
`bw`	logical, indicates whether to overwrite with a gray scale plot
`xlab`	Label for x-axis
`ylab`	Label for y-axis
`col`	standard color parameter
`lty`	standard line type preference
`lwd`	standard line width preference

Author(s)

J.H. Maindonald

Examples

attach(two65)
overlapDensity(ambient,heated)
t.test(ambient,heated)

DAAG

Data Analysis and Graphics Data and Functions

v1.24

GPL-3

Authors

John H. Maindonald and W. John Braun

Initial release

overlapDensity

Description

Usage

Arguments

Author(s)

See Also

Examples

DAAG

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