WrightMap Listing

Introducing Person Probability Plots

Using the ppPlot Function

In this tutorial, we’re going to dive into a cool new feature introduced in WrightMap version 1.2: the Person Probability Plot (PP plot). This plot is designed to represent…

David Torres Irribarra

Simulating Item Responses with the Partial Credit and Rasch Models

Using the sim.PCM Function

In this tutorial, we’re going to explore how to simulate item responses using the sim.PCM function. This function is handy for generating polytomous item responses, allowing…

David Torres Irribarra

Using WrightMap with the TAM Package

WrightMap features close integration with Conquest, allowing you to easily read from its output files. However, this is just a nice convenience for Conquest users, as…

David Torres Irribarra & Rebecca Freund

WrightMap Tutorial - Part 1

Plotting Unidimensional/Dichotomous Models

This is an introduction to the wrightMap function in the WrightMap package. The wrightMap function creates Wright Maps based on person estimates and item parameters produced…

David Torres Irribarra & Rebecca Freund

WrightMap Tutorial - Part 2

Plotting Items in Different Ways

We start by creating mock person and item estimates.

David Torres Irribarra & Rebecca Freund

WrightMap Tutorial - Part 3

Plotting Multidimensional & Polytomous Models

In Part 1, we reviewed how to install the package from GitHub and how to customize unidimensional and dichotomous models. Now in Part 2, we’ll look at graphing some more…

David Torres Irribarra & Rebecca Freund

WrightMap Tutorial - Part 4

Using Conquest Output and Making Thresholds

In this part of the tutorial, we’ll show how to load ConQuest output to make a CQmodel object and then WrightMaps. We’ll also show how to turn deltas into thresholds. All…

David Torres Irribarra & Rebecca Freund

WrightMap Tutorial - Part 5

More Flexibility Using the person and item side functions

Version 1.2 of the WrightMap package allows you to directly access the functions used for drawing the person and item sides of the map in order to allow more flexible item…

David Torres Irribarra & Rebecca Freund