compressDataFrame

An object of class <code>data.frame</code>

tabdata

freqColName

Compress a data frame into unique rows and frequency counts.

The purpose of this package is to factor out logic and
        math common to Item Response Theory fitting, diagnostics, and
        analysis. It is envisioned as core support code suitable for
        more specialized IRT packages to build upon. A version 1.0 will
        offer optimized, low-level functions to map parameters to
        response probabilities for a wide variety of dichotomous and
        polytomous item models.

compressDataFrame: Compress a data frame into unique rows and frequencies

Description

Usage

Arguments

Value