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QCPE
THIS INFORMATION IS OBSOLETE AND IS PROVIDED ONLY FOR ITS HISTORICAL VALUE
Main / Catalog / Section11
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QCMP040. FACTANAL: Target-Transformation Factor
Analysis
by E. R. Malinowski, P. H. Weiner, P. T.
Funke and A. Levinstone, Department of
Chemistry and Chemical Engineering, Stevens
Institute of Technology, Hoboken, New Jersey
07030 and D. G. Howery, J. M. Soroka and R.
B. Selzer, Department of Chemistry, Brooklyn
College of CUNY, Brooklyn, New York 11210
Converted by K. J. Tupper, QCPE
FACTANAL allows one to carry out principal
component target-transformationfactor
analyses of complete matrices of chemical
data. Using a Jacobi diagonalization method,
the program computes the eigenvalues
(abstract factors) for the
correlation/covariance matrix formed from the
data matrix. The data matrix is reproduced
using combinations involving successively
smaller eigenvalues. The program performs
least-squares target transformations of test
vectors related to the physical and
structural parameters of the row designees of
the matrix (and of the column designees,
using the transposed matrix). The target-
transformation capability is not available in
standard factor-analysis programs.The
matrix can be calculated for a given number
of factors employing combinations of columns
and of rows from the data matrix and
combinations of specified complete physical
and structural test vectors. A large number
of useful printing and tabulational options
are included. Sample output for a test
problem is explained in the documentation.
The original documentation (QCPE 320) is
supplied in the program FACTANAL.DOC. One
should note that the columns used in the
input program for the number of rows and the
number of columns has been changed from 1-3
and 4-6 to 1-2 and 3-4, respectively, making
this software capable of handling a matrix as
large as 99 x 99. One should also note that
the format for data read into the matrix has
been changed to F10.3. This may be changed
by changing the format line labelled 50.
The software will read a file named INPUT and
write to a file OUTPUT. The status of OUTPUT
is specified as 'NEW', so one should take
care not to run this software without first
changing the name of the old OUTPUT file.
The software will also prompt the user for a
label for UNIT 8. This is the file that the
SUMMARY is written to, and any name can be
used. If you want this summary to be written
to OUTPUT, specify M14P in the main program
as 8.
FORTRAN 77 (Microsoft FORTRAN)
Lines of Code: 2610
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