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uniform_dataset.html
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<html>
<head>
<title>
UNIFORM_DATASET - Generate Uniform Random Datasets
</title>
</head>
<body bgcolor="#EEEEEE" link="#CC0000" alink="#FF3300" vlink="#000055">
<h1 align = "center">
UNIFORM_DATASET <br> Generate Uniform Random Datasets
</h1>
<hr>
<p>
<b>UNIFORM_DATASET</b>
is a FORTRAN90 program which
creates a uniform random dataset and writes it to a file.
</p>
<h3 align = "center">
Usage:
</h3>
<p>
<blockquote>
<b>uniform_dataset</b> <i>m</i> <i>n</i> <i>seed</i>
</blockquote>
where
<ul>
<li>
<i>m</i> is the spatial dimension;
</li>
<li>
<i>n</i> is the number of points to generate;
</li>
<li>
<i>seed</i> is the initial seed value.
</li>
</ul>
The data is written to the file <b>uniform_<i>m</i>_<i>n</i>.txt</b>.
</p>
<h3 align = "center">
Licensing:
</h3>
<p>
The computer code and data files described and made available on this web page
are distributed under
<a href = "../../txt/gnu_lgpl.txt">the GNU LGPL license.</a>
</p>
<h3 align = "center">
Languages:
</h3>
<p>
<b>UNIFORM_DATASET</b> is available in
<a href = "../../cpp_src/uniform_dataset/uniform_dataset.html">a C++ version</a> and
<a href = "../../f_src/uniform_dataset/uniform_dataset.html">a FORTRAN90 version</a> and
<a href = "../../m_src/uniform_dataset/uniform_dataset.html">a MATLAB version</a>.
</p>
<h3 align = "center">
Related Data and Programs:
</h3>
<p>
<a href = "../../f_src/cvt_dataset/cvt_dataset.html">
CVT_DATASET</a>,
a FORTRAN90 program which
computes a Centroidal Voronoi Tessellation and writes it to a file.
</p>
<p>
<a href = "../../f_src/cvt_mod_dataset/cvt_mod_dataset.html">
CVT_MOD_DATASET</a>,
a FORTRAN90 program which
creates a CVT dataset on the unit square with no boundaries (a logical torus);
</p>
<p>
<a href = "../../f_src/faure_dataset/faure_dataset.html">
FAURE_DATASET</a>,
a FORTRAN90 program which
creates a Faure quasirandom dataset;
</p>
<p>
<a href = "../../f_src/grid_dataset/grid_dataset.html">
GRID_DATASET</a>,
a FORTRAN90 program which
creates a grid sequence and writes it to a file.
</p>
<p>
<a href = "../../f_src/halton_dataset/halton_dataset.html">
HALTON_DATASET</a>,
a FORTRAN90 program which
creates a Halton sequence and writes it to a file.
</p>
<p>
<a href = "../../f_src/hammersley_dataset/hammersley_dataset.html">
HAMMERSLEY_DATASET</a>,
a FORTRAN90 program which
creates a Hammersley sequence and writes it to a file.
</p>
<p>
<a href = "../../f_src/hex_grid_dataset/hex_grid_dataset.html">
HEX_GRID_DATASET</a>,
a FORTRAN90 program which
creates a hexagonal grid dataset and writes it to a file.
</p>
<p>
<a href = "../../f_src/ihs_dataset/ihs_dataset.html">
IHS_DATASET</a>,
a FORTRAN90 program which
creates an improved distributed Latin hypercube dataset and writes it to a file.
</p>
<p>
<a href = "../../f_src/latin_center_dataset/latin_center_dataset.html">
LATIN_CENTER_DATASET</a>,
a FORTRAN90 program which
creates a Latin Center Hypercube dataset;
</p>
<p>
<a href = "../../f_src/latin_edge_dataset/latin_edge_dataset.html">
LATIN_EDGE_DATASET</a>,
a FORTRAN90 program which
creates a Latin Edge Hypercube dataset;
</p>
<p>
<a href = "../../f_src/latin_random_dataset/latin_random_dataset.html">
LATIN_RANDOM_DATASET</a>,
a FORTRAN90 program which
creates a Latin Random Hypercube dataset;
</p>
<p>
<a href = "../../f_src/lcvt_dataset/lcvt_dataset.html">
LCVT_DATASET</a>,
a FORTRAN90 program which
computes a latinized Centroidal Voronoi Tessellation and writes it to a file.
</p>
<p>
<a href = "../../f_src/monte_carlo_rule/monte_carlo_rule.html">
MONTE_CARLO_RULE</a>,
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.
</p>
<p>
<a href = "../../f_src/niederreiter2_dataset/niederreiter2_dataset.html">
NIEDERREITER2_DATASET</a>,
a FORTRAN90 program which
creates a Niederreiter quasirandom dataset with base 2;
</p>
<p>
<a href = "../../f_src/normal_dataset/normal_dataset.html">
NORMAL_DATASET</a>,
a FORTRAN90 program which
generates a dataset of multivariate normal pseudorandom values and writes them to a file.
</p>
<p>
<a href = "../../f_src/sobol_dataset/sobol_dataset.html">
SOBOL_DATASET</a>,
a FORTRAN90 program which
computes a Sobol quasirandom sequence and writes it to a file.
</p>
<p>
<a href = "../../f_src/uniform/uniform.html">
UNIFORM</a>,
a FORTRAN90 library which
computes uniformly distributed pseudorandom values.
</p>
<p>
<a href = "../../datasets/uniform/uniform.html">
UNIFORM</a>,
a dataset directory which
contains sample datasets
created by UNIFORM_DATASET.
</p>
<p>
<a href = "../../f_src/van_der_corput_dataset/van_der_corput_dataset.html">
VAN_DER_CORPUT_DATASET</a>,
a FORTRAN90 program which
creates a van der Corput quasirandom sequence and writes it to a file.
</p>
<h3 align = "center">
Reference:
</h3>
<p>
<ol>
<li>
Paul Bratley, Bennett Fox, Linus Schrage,<br>
A Guide to Simulation,<br>
Springer Verlag, pages 201-202, 1983.
</li>
<li>
Bennett Fox,<br>
Algorithm 647:
Implementation and Relative Efficiency of Quasirandom
Sequence Generators,<br>
ACM Transactions on Mathematical Software,<br>
Volume 12, Number 4, pages 362-376, 1986.
</li>
<li>
Donald Knuth, <br>
The Art of Computer Programming,<br>
Volume 2: Seminumerical Algorithms,<br>
Addison Wesley, 1969.
</li>
</ol>
</p>
<h3 align = "center">
Source Code:
</h3>
<p>
<ul>
<li>
<a href = "uniform_dataset.f90">uniform_dataset.f90</a>,
the source code.
</li>
<li>
<a href = "uniform_dataset.sh">uniform_dataset.sh</a>,
commands to compile and load the source code.
</li>
</ul>
</p>
<h3 align = "center">
Examples:
</h3>
<p>
<ul>
<li>
<a href = "uniform_02_00025.txt">uniform_02_00025.txt</a>,
is the file created in response to the command <b>"uniform_dataset 2 25 123456789"</b>.
</li>
</ul>
</p>
<h3 align = "center">
List of Routines:
</h3>
<p>
<ul>
<li>
<b>MAIN</b> is the main program for UNIFORM_DATASET.
</li>
<li>
<b>GET_UNIT</b> returns a free FORTRAN unit number.
</li>
<li>
<b>R8MAT_UNIFORM_01</b> returns a unit pseudorandom R8MAT.
</li>
<li>
<b>R8MAT_WRITE</b> writes an R8MAT file.
</li>
<li>
<b>S_TO_I4</b> reads an integer value from a string.
</li>
<li>
<b>TIMESTAMP</b> prints the current YMDHMS date as a time stamp.
</li>
</ul>
</p>
<p>
You can go up one level to <a href = "../f_src.html">
the FORTRAN90 source codes</a>.
</p>
<hr>
<i>
Last revised on 04 December 2009.
</i>
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