Lisrel on the U cluster includes three modules, Simplis, Prelis 2, and Lisrel 8. Simplis is a simplified command language for building and testing structural equation models, avoiding much of the complexity of matrix notation in Lisrel. Prelis is a preprocessor for Lisrel, capable of transforming data and producing tetrachoric and polychoric correlations as well as asymptotic covariance matrices needed for some Lisrel programs. Lisrel 8 is the most recent version of the original Lisrel program written by Joreskog and Sorbom. Lisrel is used for structural equations modelling, including Confirmatory Factor Analysis and Path Models.
Sample programs are stored in /usr/local/depot/lisrel-8.51/lib
in four directories:
LS8EX, PR2EX, SIMEX, and
SPLEX. LS8EX, PR2EX, and
SPLEX include sample
programs for Lisrel 8, Prelis, and Simplis. SIMEX includes sample programs
for simulations.
To execute a Lisrel 8 or Simplis program, type
lisrel infile outfile &
where "infile" is the name of the input file and "outfile" is the name of
the output file.
To execute a Prelis program, type
prelis infile outfile &
where "infile" is the name of the input file and "outfile" is the name of
the output file.