RcmdrMisc (version 1.0-1)

plotDistr: Plot a probability density, mass, or distribution function.

Description

This function plots a probability density, mass, or distribution function, adapting the form of the plot as appropriate.

Usage

plotDistr(x, p, discrete=FALSE, cdf=FALSE, ...)

Arguments

x

horizontal coordinates

p

vertical coordinates

discrete

is the random variable discrete?

cdf

is this a cumulative distribution (as opposed to mass) function?

...

arguments to be passed to plot.

Value

• Produces a plot; returns NULL invisibly.

Examples

x <- seq(-4, 4, length=100)
plotDistr(x, dnorm(x), xlab="Z", ylab="p(z)", main="Standard Normal Density")

x <- 0:10
plotDistr(x, pbinom(x, 10, 0.5), xlab="successes", 
    discrete=TRUE, cdf=TRUE,
    main="Binomial Distribution Function, p=0.5, n=10")