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Bill Somerville
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<html>
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=US-ASCII">
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<title>Statistical Distribution Explorer</title>
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<link rel="stylesheet" href="../../../../../doc/src/boostbook.css" type="text/css">
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<meta name="generator" content="DocBook XSL Stylesheets V1.75.2">
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<link rel="home" href="index.html" title="Statistical Distribution Explorer">
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</head>
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<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF">
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<table cellpadding="2" width="100%"><tr>
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<td valign="top"><img alt="Boost C++ Libraries" width="277" height="86" src="../../../../../boost.png"></td>
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<td align="center"><a href="../../../../../index.html">Home</a></td>
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<td align="center"><a href="../../../../../libs/libraries.htm">Libraries</a></td>
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<td align="center"><a href="http://www.boost.org/users/people.html">People</a></td>
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<td align="center"><a href="http://www.boost.org/users/faq.html">FAQ</a></td>
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<td align="center"><a href="../../../../../more/index.htm">More</a></td>
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</tr></table>
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<hr>
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<div class="spirit-nav"></div>
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<div class="article">
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<div class="titlepage">
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<div>
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<div><h2 class="title">
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<a name="statistical_distribution_explorer"></a>Statistical Distribution Explorer</h2></div>
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<div><div class="authorgroup">
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<div class="author"><h3 class="author">
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<span class="firstname">Paul A.</span> <span class="surname">Bristow</span>
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</h3></div>
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<div class="author"><h3 class="author">
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<span class="firstname">John</span> <span class="surname">Maddock</span>
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</h3></div>
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</div></div>
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<div><p class="copyright">Copyright © 2008 Paul A. Bristow, John Maddock</p></div>
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<div><div class="legalnotice">
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<a name="id759711"></a><p>
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Distributed under the Boost Software License, Version 1.0. (See accompanying
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file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
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</p>
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</div></div>
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</div>
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<hr>
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</div>
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<p>
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A Windows utility to show the properties of statistical distributions using parameters
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provided interactively by the user.
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</p>
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<p>
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The distributions provided are:
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</p>
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<div class="itemizedlist"><ul class="itemizedlist" type="disc">
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<li class="listitem">
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bernoulli
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</li>
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<li class="listitem">
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beta_distribution
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</li>
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<li class="listitem">
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binomial_distribution
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</li>
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<li class="listitem">
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cauchy
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</li>
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<li class="listitem">
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chi_squared
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</li>
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<li class="listitem">
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exponential
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</li>
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<li class="listitem">
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extreme_value
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</li>
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<li class="listitem">
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fisher_f
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</li>
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<li class="listitem">
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gamma_distribution
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</li>
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<li class="listitem">
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lognormal_distribution
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</li>
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<li class="listitem">
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negative_binomial_distribution
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</li>
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<li class="listitem">
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normal_distribution
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</li>
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<li class="listitem">
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pareto
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</li>
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<li class="listitem">
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poisson
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</li>
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<li class="listitem">
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rayleigh
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</li>
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<li class="listitem">
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students_t
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</li>
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<li class="listitem">
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triangular
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</li>
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<li class="listitem">
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uniform
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</li>
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<li class="listitem">
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weibull
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</li>
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</ul></div>
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<p>
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Properties of distributions computed are:
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</p>
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<div class="itemizedlist"><ul class="itemizedlist" type="disc">
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<li class="listitem">
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mean
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</li>
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<li class="listitem">
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mode
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</li>
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<li class="listitem">
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median
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</li>
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<li class="listitem">
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variance
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</li>
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<li class="listitem">
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standard deviation
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</li>
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<li class="listitem">
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coefficient of variation,
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</li>
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<li class="listitem">
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skewness
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</li>
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<li class="listitem">
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kurtosis
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</li>
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<li class="listitem">
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excess
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</li>
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<li class="listitem">
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range supported
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</li>
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</ul></div>
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<p>
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Calculated, from values provided, are:
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</p>
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<div class="itemizedlist"><ul class="itemizedlist" type="disc">
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<li class="listitem">
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probability density (or mass) function (PDF)
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</li>
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<li class="listitem">
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cumulative distribution function (CDF), and complement
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</li>
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<li class="listitem">
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Quantiles (percentiles) are calculated for typical risk (alpha) probabilities
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(0.001, 0.01, 0.5, 0.1, 0.333) and for additional probabilities provided
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by the user.
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</li>
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</ul></div>
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<p>
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Results can be saved to text files using Save or SaveAs. All the values on the
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four tabs are output to the file chosen, and are tab separated to assist input
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to other programs, for example, spreadsheets or text editors.
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</p>
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<p>
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Note: Excel (for example), only shows 10 decimal digits, by default: to display
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the maximum possible precision (abotu 15 decimal digits), it is necessary to
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format all cells to display this precision. Although unusually accurate, not
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all values computed by Distexplorer will be as accurate as this. Values shown
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as NaN cannot be calculated from the value(s) given, most commonly because the
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value input is outside the range for the distribution.
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</p>
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<p>
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For more information, including downloads, see
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</p>
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<p>
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<a href="http://distexplorer.sourceforge.net/" target="_top">Distexplorer at Sourceforge</a>
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</p>
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<p>
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This Microsoft Windows 32 package distribution.exe was generated from a C# program
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and uses a boost_math.dll generated using the Boost.Math C++ source code from
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the Boost.Math Toolkit, compiled in CLI mode, containing the underlying statistical
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distribution classes and functions.
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</p>
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<p>
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All source code is freely available for view and use under the <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">Boost
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Open Source License</a>.
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</p>
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<p>
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<a href="https://svn.boost.org/svn/boost/sandbox%5Cmath_toolkit%5Clibs%5Cmath%5Cdot_net_example" target="_top">Math
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Toolkit C++ source code</a> to produce boost_math.dll is in the most recent
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<a href="http://www.boost.org" target="_top">Boost</a> release, initially 1.35.0.
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</p>
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<p>
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It is distributed as a single Windows Installer package Setupdistex.msi. Unzip
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the distexplorer.zip to a temporary location of your choice and run setup.exe.
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</p>
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<p>
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(Note that .NET framework 2.0 and VCredist are requirements for this program.
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Most recent and updated Windows environments will already have these, but they
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are quickly, easily and safely installed from the Microsoft site if required.)
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</p>
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<p>
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(The package cannot be run on other platforms at present but it should be possible
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to build an equivalent utility on any C/C++ platform if anyone would like to
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undertake this task.)
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</p>
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</div>
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<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
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<td align="left"><p><small>Last revised: July 01, 2010 at 21:45:23 GMT</small></p></td>
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<td align="right"><div class="copyright-footer"></div></td>
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</tr></table>
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<hr>
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<div class="spirit-nav"></div>
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</body>
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</html>
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