When using <code>lapply</code> or <code>sapply</code> to avoid explicit loops,
one often ends up with complex structures represening lists of 
lists of lists... Function <code>l2m</code> tries to transform such a 
structure into a matrix with a column for each distinct name in 
the list.

list

Provides a simple common interface to the estimation of
        item parameters in IRT models for binary responses with three
        different programs (ICL, BILOG-MG, and ltm, and a variety of
        functions useful with IRT models.

l2m: Transform a list of lists... to a matrix

Description

Usage

Arguments

Value