UNIFORM_DATASET
Generate Uniform Random Datasets

UNIFORM_DATASET is a FORTRAN90 program which creates a uniform random dataset and writes it to a file.

The program allows the user to choose:

• M, the spatial dimension;
• N, the number of points to generate;
• SEED, the initial seed value.

Licensing:

The computer code and data files described and made available on this web page are distributed under the GNU LGPL license.

Related Data and Programs:

TABLE is a file format which is used for the output files created by UNIFORM_DATASET.

TABLE_DISCREPANCY is a C++ program which can read a TABLE file of points (presumed to lie in the unit hypercube) and compute bounds on the star discrepancy, a measure of dispersion.

UNIFORM is a FORTRAN90 library which computes uniformly distributed pseudorandom values.

UNIFORM is a dataset directory which contains sample datasets created by UNIFORM_DATASET.

UNIFORM_DATASET is available in a C++ version and a FORTRAN90 version and a MATLAB version.

Reference:

1. Paul Bratley, Bennett Fox, Linus Schrage,
   A Guide to Simulation,
   Springer Verlag, pages 201-202, 1983.
2. Bennett Fox,
   Algorithm 647: Implementation and Relative Efficiency of Quasirandom Sequence Generators,
   ACM Transactions on Mathematical Software,
   Volume 12, Number 4, pages 362-376, 1986.
3. Donald Knuth,
   The Art of Computer Programming,
   Volume 2: Seminumerical Algorithms,
   Addison Wesley, 1969.

Source Code:

• uniform_dataset.f90, the source code.
• uniform_dataset.csh, commands to compile and load the source code.

List of Routines:

• MAIN is the main program for UNIFORM_DATASET.
• GET_SEED returns a seed for the random number generator.
• GET_UNIT returns a free FORTRAN unit number.
• R8MAT_UNIFORM_01 returns a unit pseudorandom R8MAT.
• R8MAT_WRITE writes an R8MAT file.
• TIMESTAMP prints the current YMDHMS date as a time stamp.

You can go up one level to the FORTRAN90 source codes.