ggiteminfo: A Function for Creating Publication Quality Item Response...

In m-a-siraji/BAAP: Create Publication Quality Tables and Plots

A Function for Creating Publication Quality Item Response Theory based item information plot.

Description

This function will create publication worthy Item Response Theory based item information plot. using ggplot2 from objects created from mirt pack.

Usage

ggiteminfo(model, item, theta)

Arguments

model	A mirt package fitted object.
item	Item number (i.e. 1,2,3,4).
theta	Theta range. Put only one number. Theta =3 will be considered as theta range (-3 to 3).

Value

A publication quality item information plot.Output object is a ggplot object.

Examples

data <- tabledown::Rotter[, 11:31]
model <- mirt::mirt(data, model = 1, itemtype = '2PL')

plot <- ggiteminfo(model, 1, 3)

m-a-siraji/BAAP documentation built on May 7, 2024, 12:54 p.m.