TAM (version 1.995-0)

IRT.data.tam: Extracting Item Response Dataset

Description

Extracts the used data set for models fitted in TAM. See CDM::IRT.data for more details.

Usage

"IRT.data"(object, ...)
"IRT.data"(object, ...)
"IRT.data"(object, ...)

Arguments

object

Object of class tam, tam.mml, tam.mml.3pl or tamaan.

...

Further arguments to be passed

Value

A dataset with item responses

Examples

## Not run: 
# #############################################################################
# # EXAMPLE 1: Dichotomous data data.sim.rasch
# #############################################################################	
# 
# data(data.sim.rasch)
# dat <- data.sim.rasch
# 
# # estimate model
# mod1 <- tam.mml(dat)
# # extract dataset (and weights and group if available)
# dmod1 <- IRT.data(mod1)
# str(dmod1)
# ## End(Not run)