UNIFORM_DATASET
Generate Uniform Random Datasets

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

Usage:

uniform_dataset m n seed

• m is the spatial dimension;
• n is the number of points to generate;
• seed is 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.

Languages:

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

Related Data and Programs:

CVT_DATASET, a FORTRAN90 program which computes a Centroidal Voronoi Tessellation and writes it to a file.

CVT_MOD_DATASET, a FORTRAN90 program which creates a CVT dataset on the unit square with no boundaries (a logical torus);

FAURE_DATASET, a FORTRAN90 program which creates a Faure quasirandom dataset;

GRID_DATASET, a FORTRAN90 program which creates a grid sequence and writes it to a file.

HALTON_DATASET, a FORTRAN90 program which creates a Halton sequence and writes it to a file.

HAMMERSLEY_DATASET, a FORTRAN90 program which creates a Hammersley sequence and writes it to a file.

HEX_GRID_DATASET, a FORTRAN90 program which creates a hexagonal grid dataset and writes it to a file.

IHS_DATASET, a FORTRAN90 program which creates an improved distributed Latin hypercube dataset and writes it to a file.

LATIN_CENTER_DATASET, a FORTRAN90 program which creates a Latin Center Hypercube dataset;

LATIN_EDGE_DATASET, a FORTRAN90 program which creates a Latin Edge Hypercube dataset;

LATIN_RANDOM_DATASET, a FORTRAN90 program which creates a Latin Random Hypercube dataset;

LCVT_DATASET, a FORTRAN90 program which computes a latinized Centroidal Voronoi Tessellation and writes it to a file.

MONTE_CARLO_RULE, a FORTRAN90 program which generates a dataset of N random M-dimensional points, regards it as a quadrature rule for the unit hypercube, and writes out three files of information.

NIEDERREITER2_DATASET, a FORTRAN90 program which creates a Niederreiter quasirandom dataset with base 2;

NORMAL_DATASET, a FORTRAN90 program which generates a dataset of multivariate normal pseudorandom values and writes them to a file.

SOBOL_DATASET, a FORTRAN90 program which computes a Sobol quasirandom sequence and writes it to a file.

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

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

VAN_DER_CORPUT_DATASET, a FORTRAN90 program which creates a van der Corput quasirandom sequence and writes it to a file.

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.

Examples:

• uniform_02_00025.txt, is the file created in response to the command "uniform_dataset 2 25 123456789".

List of Routines:

• MAIN is the main program for UNIFORM_DATASET.
• GET_UNIT returns a free FORTRAN unit number.
• R8MAT_UNIFORM_01 returns a unit pseudorandom R8MAT.
• R8MAT_WRITE writes an R8MAT file.
• S_TO_I4 reads an integer value from a string.
• TIMESTAMP prints the current YMDHMS date as a time stamp.

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