tp2HLM by David Rogosa and Ghassan Ghandour
The DOS utility tp2hlm.exe takes as input a longitudinal data set with the rectangular structure shown in Exhibit 1 (p.153) (with or without missing observations) and creates the within and between unit data files for use by the HLM program of Bryk and Raudenbush.
The program requests

A similar utility tpsm2hlm.exe can be used for creating the HLM data files for longitudinal data structures (such as the data in the Reply) where each individual has different observation times. This utility would be used for data sets such as yfzfsm.dat and the requested input for the program are two data files, the first containing the Y-observations and the second the individual times of observations.