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\name{cover.plot}
\alias{cover.plot}
\alias{coverage}
\title{Unit-level coverage plots for beta parameters from MD EI model}
\description{Generates a plot of central credible intervals for the
unit-level beta parameters from the Multinomial-Dirichlet ecological inference model
(see \code{\link{ei.MD.bayes}}).}
\usage{
cover.plot(object, row, column, x = NULL, CI = 0.95,
medians = TRUE, col = NULL, ylim = c(0,1),
ylab, lty = par("lty"), lwd = par("lwd"), ...)
}
\arguments{
\item{object}{output from \code{\link{ei.MD.bayes}}}
\item{row}{a character string specifying the row marginal of interest}
\item{column}{a character string specifying the column marginal of
interest}
\item{x}{an optional covariate to index the units along the x-axis}
\item{CI}{a fraction between 0 and 1 (defaults to 0.95), specifying
the coverage of the central credible interval to be plotted for each unit}
\item{medians}{a logical value specifying whether to plot the median
(defaults to \code{TRUE}). If \code{medians = FALSE}, the medians
are not plotted.}
\item{col}{an optional vector of colors to be passed to
\code{plot} and \code{segments}. If \code{col} is of
length two, then the first color is used for \code{plot} and the
second for \code{segments}.}
\item{ylim}{an optional range for the y-axis (defaults to \code{c(0,1)}).}
\item{ylab}{an optional label for the y-axis (defaults to
\code{Proportion of row in column}).}
\item{lty}{an optional line type passed to \code{segments}.}
\item{lwd}{an optional line width argument passed to
\code{segments}.}
\item{...}{additional arguments passed to \code{plot}.}
}
\value{
A plot with vertical intervals indicating the central credible
intervals for each ecological unit.
}
\seealso{\code{plot}, \code{segments}, \code{par}}
\author{
Olivia Lau <\email{olivia.lau@post.harvard.edu}>
}
\keyword{hplot}
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