Joint Probability Region Plot
Given two vectors, the joint.pr.plot function creates a
scatterplot with ellipses of probability regions.
joint.pr.plot(x, y, quantiles=c(0.25,0.50,0.75,0.95))
x |
This required argument is a vector. |
y |
This required argument is a vector. |
quantiles |
These are the quantiles for which probability regions
are estimated with ellipses. The center of the ellipse is plotted by
default. The 0.95 quantile creates a probability region that
contains approximately 95% of the data or samples of |
A probability region is also commonly called a credible region. For
more information on probability regions, see p.interval.
Joint probability regions are plotted only for two variables, and the
regions are estimated with functions modified from the car
package. The internal ellipse functions assume bivariate normality.
This function is often used to plot posterior distributions of
samples, such as from the LaplacesDemon function.
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library(LaplacesDemon) x <- rnorm(100) y <- rnorm(100) joint.pr.plot(x, y)
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