More Flexibility using the person and item side functions Introduction 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 person maps. The parts can be put together on the ...

Using Conquest Output and Making Thresholds Updated Fri 24-Apr-2020 Intro 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 the example files here are available in ...

Plotting Multidimensional & Polytomous Models Updated Fri 24-Apr-2020 Multidimensional models We will need again to load RColorBrewer for this example. install.packages("RColorBrewer") library(RColorBrewer) We start by creating mock person and item estimates. For the person proficiencies we create a matrix with five columns of 1000 values each. set.seed(2020) mdim....

Plotting the items in different ways Updated Fri 24-Apr-2020 Setup We start by creating mock person and item estimates. For the person proficiencies we create a single vector with 1000 values. set.seed(2020) mdim.sim.thetas

Plotting Unidimensional/Dichotomous Models Updated Fri 24-Apr-2020 Setup and basics 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 by an item response analysis. The CQmodel function reads output files created using ConQuest ...