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<html>
<head>
<title>
MEDIT_TO_FEM - Convert Mesh Data from MEDIT to FEM Format.
</title>
</head>
<body bgcolor="#EEEEEE" link="#CC0000" alink="#FF3300" vlink="#000055">
<h1 align = "center">
MEDIT_TO_FEM <br> Convert Mesh Data from MEDIT to FEM Format.
</h1>
<hr>
<p>
<b>MEDIT_TO_FEM</b>
is a C++ program which
reads a mesh file created by the MEDIT program
and writes a corresponding pair of node and element files that correspond
to the FEM format.
</p>
<h3 align = "center">
Usage:
</h3>
<p>
<blockquote>
<b>medit_to_fem</b> <i>prefix</i>
</blockquote>
where <i>prefix</i> is the common filename prefix so that:
<ul>
<li>
<i>prefix</i><b>.mesh</b>, the MEDIT file to be converted;
</li>
<li>
<i>prefix</i><b>_nodes.txt</b> will be the FEM node file created by the program.
</li>
<li>
<i>prefix</i><b>_elements.txt</b> will be the FEM element file
created by the program.
</li>
</ul>
</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>MEDIT_TO_FEM</b> is available in
<a href = "../../c_src/medit_to_fem/medit_to_fem.html">a C version</a> and
<a href = "../../cpp_src/medit_to_fem/medit_to_fem.html">a C++ version</a> and
<a href = "../../f77_src/medit_to_fem/medit_to_fem.html">a FORTRAN77 version</a> and
<a href = "../../f_src/medit_to_fem/medit_to_fem.html">a FORTRAN90 version</a> and
<a href = "../../m_src/medit_to_fem/medit_to_fem.html">a MATLAB version</a>.
</p>
<h3 align = "center">
Related Data and Programs:
</h3>
<p>
<a href = "../../py_src/dolfin-convert/dolfin-convert.html">
DOLFIN-CONVERT</a>,
a Python program which
can convert a mesh file from Gmsh, MEDIT, METIS or SCOTCH format to an
XML format suitable for use by DOLFIN or FENICS,
by Anders Logg.
</p>
<p>
<a href = "../../cpp_src/fem_io/fem_io.html">
FEM_IO</a>,
a C++ library which
reads or writes node, element and data files defining a model
associated with the finite element method (FEM).
</p>
<p>
<a href = "../../data/fem2d/fem2d.html">
FEM2D</a>,
a data directory which
contains examples of 2D FEM files, a pair of files defining the coordinates
of nodes, and the nodes that form triangular elements.
</p>
<p>
<a href = "../../cpp_src/gmsh_to_fem/gmsh_to_fem.html">
GMSH_TO_FEM</a>,
a C++ program which
reads a mesh data file created by the GMSH program
and writes a pair of node and element files that correspond
to the FEM format.
</p>
<p>
<a href = "../../data/medit/medit.html">
MEDIT</a>,
a data directory which
contains examples of files which can be used by the MEDIT program
to define a 2D or 3D mesh for use by the finite element method (FEM),
using triangles, quadrilaterals, tetrahedrons or hexahedrons.
</p>
<p>
<a href = "../../examples/medit/medit.html">
MEDIT</a>,
examples which
illustrate the use of medit, an interactive graphics program developed
to visualize numerical simulation results on unstructured meshes in
two and three dimensions. Scalar, vector and tensor fields can be
easily associated and displayed with meshes.
The program is by Pascal Frey.
</p>
<p>
<a href = "../../cpp_src/medit_io/medit_io.html">
MEDIT_IO</a>,
a C++ library which
can read or write files used by the MEDIT program, which can be used to
define the a mesh associated with the finite element method (FEM)
in 2D or 3D, using triangles, quadrilaterals, tetrahedrons or hexahedrons.
</p>
<p>
<a href = "../../py_src/xml_to_fem/xml_to_fem.html">
XML_TO_FEM</a>,
a Python program which
reads an XML file created by FENICS or DOLFIN, describing a mesh
in 1D, 2D, or 3D, and creates corresponding FEM files, namely,
a file of node coordinates, and a file of element connectivities.
</p>
<h3 align = "center">
Source Code:
</h3>
<p>
<ul>
<li>
<a href = "medit_to_fem.cpp">medit_to_fem.cpp</a>, the source code.
</li>
<li>
<a href = "medit_to_fem.sh">medit_to_fem.sh</a>,
BASH commands to compile the source code.
</li>
</ul>
</p>
<h3 align = "center">
Examples and Tests:
</h3>
<p>
<b>CUBE86</b> is a 3D mesh of tetrahedrons.
<ul>
<li>
<a href = "cube86.mesh">cube86.mesh</a>,
a MEDIT file.
</li>
<li>
<a href = "cube86_nodes.txt">cube86_nodes.txt</a>,
the FEM node file created by the program.
</li>
<li>
<a href = "cube86_elements.txt">cube86_elements.txt</a>,
the FEM element file created by the program.
</li>
</ul>
</p>
<p>
<b>ELL</b> is a 2D mesh of triangles.
<ul>
<li>
<a href = "ell.mesh">ell.mesh</a>,
a MEDIT file.
</li>
<li>
<a href = "ell_nodes.txt">ell_nodes.txt</a>,
the FEM node file created by the program.
</li>
<li>
<a href = "ell_elements.txt">ell_elements.txt</a>,
the FEM element file created by the program.
</li>
</ul>
</p>
<h3 align = "center">
List of Routines:
</h3>
<p>
<ul>
<li>
<b>MAIN</b> is the main program for MEDIT_TO_FEM.
</li>
<li>
<b>CH_CAP</b> capitalizes a single character.
</li>
<li>
<b>CH_EQI</b> is TRUE (1) if two characters are equal, disregarding case.
</li>
<li>
<b>CH_TO_DIGIT</b> returns the value of a base 10 digit.
</li>
<li>
<b>I4MAT_WRITE</b> writes an I4MAT file.
</li>
<li>
<b>I4VEC_ZERO</b> zeroes an I4VEC.
</li>
<li>
<b>MESH_DATA_READ</b> reads data from a MESH file.
</li>
<li>
<b>MESH_SIZE_READ</b> reads sizes from a MESH file.
</li>
<li>
<b>R8MAT_WRITE</b> writes an R8MAT file.
</li>
<li>
<b>R8VEC_ZERO</b> zeroes an R8VEC.
</li>
<li>
<b>S_BEGIN</b> reports whether string 1 begins with string 2.
</li>
<li>
<b>S_EQI</b> reports whether two strings are equal, ignoring case.
</li>
<li>
<b>S_LEN_TRIM</b> returns the length of a string to the last nonblank.
</li>
<li>
<b>S_NEWLINE_TO_NULL</b> replaces carriage returns or newlines by nulls.
</li>
<li>
<b>S_TO_I4</b> reads an I4 from a string.
</li>
<li>
<b>S_TO_I4VEC</b> reads an I4VEC from a string.
</li>
<li>
<b>S_TO_R8</b> reads an R8 value from a string.
</li>
<li>
<b>S_TO_R8VEC</b> reads an R8VEC 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 = "../cpp_src.html">
the C++ source codes</a>.
</p>
<hr>
<i>
Last revised on 08 November 2014.
</i>
<!-- John Burkardt -->
</body>
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</html>