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VPLX is a FORTRAN 77 program developed in the 1990’s for the calculation of variances for complex sample designs through replication. It is in the public domain and is provided here “as is” for historical purposes.
The software is available in the form of Fortran source code. A Fortran compiler (such as f77, f90, or gfortran) will be required to install VPLX.
VPLX evolved within an original syntactic design. To improve the usability of VPLX, a three-phase plan to improve the syntax began in 1997. Version 1998.09 reflects the results of the first phase of revision. It received considerable internal testing at the Census Bureau, and is the release presented here. While a beta version from the second phase of revision was produced and tested internally, it was never released, and development of VPLX ceased.
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