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TRIANGLE_TO_FEM\ Convert Node and Element Files from TRIANGLE to FEM Format. {#triangle_to_fem-convert-node-and-element-files-from-triangle-to-fem-format. align=”center”} ===========================================================

TRIANGLE_TO_FEM is a C++ program which reads a pair of node and element files created by the TRIANGLE program and writes a corresponding pair of node and element files that correspond to the FEM format.

Usage: {#usage align=”center”}

triangle_to_fem prefix

where prefix is the common filename prefix so that:

prefix.node contains the coordinates of the nodes;
prefix.ele contains the indices of nodes forming each element.
prefix_nodes.txt will be the FEM node file created by the program.
prefix_elements.txt will be the FEM element file created by the program.

Licensing: {#licensing align=”center”}

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

Languages: {#languages align=”center”}

TRIANGLE_TO_FEM is available in a C version and a C++ version and a FORTRAN77 version and a FORTRAN90 version and a MATLAB version.

FEM_IO, a C++ library which reads or writes node, element and data files defining a model associated with the finite element method (FEM).

FEM2D, 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.

GMSH_TO_FEM, 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.

MEDIT_TO_FEM, 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.

SHOWME, a C program which can display the POLY files uses as input to TRIANGLE, and the output files that define meshes and other objects.

TRIANGLE, a C program which computes Voronoi diagrams and Delaunay triangulations, and creates and manipulates files that can be displayed by SHOWME.

TRIANGLE_DISPLAY, a MATLAB program which displays the nodes and elements of a triangulation on the MATLAB graphics screen, assuming the data has been stored in NODE and ELE files by the TRIANGLE program.

TRIANGLE_FILES, a data directory of examples of files used by the triangle and showme programs.

TRIANGLE_IO, a C++ library which can read or write node and element files created by the TRIANGLE program.

TRIANGLE_TO_MEDIT, a C++ program which reads the NODE and ELE files created by triangle() to describe a triangular mesh, and writes a corresponding MESH file for input to medit().

TRIANGLE_TO_XML, a C++ program which reads the NODE and ELE files created by triangle() to describe a triangular mesh in 2D, and writes out a corresponding XML mesh file for use by DOLFIN or FENICS.

XML_TO_FEM, 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.

Reference: {#reference align=”center”}

http://www-2.cs.cmu.edu/~quake/triangle.md, the TRIANGLE web site;

Source Code: {#source-code align=”center”}

triangle_to_fem.cpp, the source code.

Examples and Tests: {#examples-and-tests align=”center”}

ell.node, a TRIANGLE node file.
ell.ele, a TRIANGLE element file.
ell_nodes.txt, the FEM node file created by the program.
ell_elements.txt, the FEM element file created by the program.

List of Routines: {#list-of-routines align=”center”}

MAIN is the main program for TRIANGLE_TO_FEM.
ELEMENT_DATA_READ reads the header information from an element file.
ELEMENT_SIZE_READ reads the header information from an element file.
I4MAT_WRITE writes an I4MAT file with no header.
NODE_HEADER_READ reads the header information from a node file.
NODE_SIZE_READ reads the header information from a node file.
R8MAT_WRITE writes an R8MAT file.
TIMESTAMP prints the current YMDHMS date as a time stamp.

You can go up one level to the C++ source codes.

Last revised on 08 December 2010.