conquestr (version 1.4.5)

plotModelCCC: plotModelCCC

Description

Creates a plot of a model implied category characteristic curve. Note this is not for use with rout files. See the generic function plotRout for plotting rout files.

Usage

plotModelCCC(item, range = c(-6, 6), by = 0.1, plotZero)

Value

A ggplot2 object.

Arguments

item

Item parameters for a single item.

range

Lower and upper bounds to plot over (defaults to c(-6, 6).

by

Increment to the sequence along `range``.

plotZero

Should the zero category be plotted? Defaults to FALSE when item is dichotomous and TRUE otherwise.

Examples

myItem <- matrix(
  c(
    0, 0, 0, 1,
    1, 1, 0, 1
  ),
  ncol = 4, byrow=TRUE
)
myPlot <- plotModelCCC(myItem)