dexter.to.unimirt: Convert IRT model fitted using fit_enorm (from dexter...

In CambridgeAssessmentResearch/unimirt: Applications of Unidimensional IRT using the R Package 'mirt'

Convert IRT model fitted using fit_enorm (from dexter package) to a mirt object

Description

This function is designed to allow users to fit a Rasch model using the conditional maximum likelihood (CML) procedure but to still have access to all of the interactive graphical displays and other functions that are available in unimirt.

Usage

dexter.to.unimirt(dexter.obj = NULL, dexter.dat = NULL)

Arguments

dexter.obj	An object derived using the function fit_enorm from the R package dexter.
dexter.dat	The data matrix used to fit the model held in dexter.obj.

Details

Note that model objects derived using the fit_enorm function do not retain the full data set. As a result, the original data needs to be supplied as a second parameter to the conversion function.

Examples

## Not run: 
raschcml=dexter::fit_enorm(as.matrix(mathsdata[,1:5]))
coef(raschcml)
mirtfromcml=dexter.to.unimirt(raschcml,as.matrix(mathsdata[,1:5]))
MirtTidyCoef(mirtfromcml)

## End(Not run)

CambridgeAssessmentResearch/unimirt documentation built on June 10, 2025, 6:03 a.m.