% Generated by roxygen2: do not edit by hand
% Please edit documentation in R/plots.R
\name{plot_tcc}
\alias{plot_tcc}
\title{Plot the test characteristic curve}
\usage{
plot_tcc(fit, grid = seq(-6, 6, 0.05))
}
\arguments{
\item{fit}{A fitted object from \code{\link{rasch}}.}

\item{grid}{Logit grid.}
}
\value{
Called for its plotting side effect; invisibly \code{NULL}.
}
\description{
Expected total score against person location for the whole instrument.
}
\examples{
set.seed(1)
d <- seq(-2, 2, length.out = 6)
X <- matrix(rbinom(400 * 6, 1, plogis(outer(rnorm(400), d, "-"))), 400, 6)
colnames(X) <- paste0("I", 1:6)
plot_tcc(rasch(X))
}
