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<html>
<head>
<title>
TEC_IO - Read and Write TEC Files
</title>
</head>
<body bgcolor="#EEEEEE" link="#CC0000" alink="#FF3300" vlink="#000055">
<h1 align = "center">
TEC_IO <br> Read and Write TEC Files
</h1>
<hr>
<p>
<b>TEC_IO</b>
is a MATLAB library which
can read or write
a TEC graphics file containing a finite element model.
</p>
<p>
There are several kinds of TEC files; the routines given here can only
handle the case where a single <b>ZONE</b> record is used to define finite
element data, using a <b>DATAPACKING</b> value of "POINT" (not "BLOCK"),
and a ZONETYPE of
<ul>
<li>
FETRIANGLE
</li>
<li>
FEQUADRILATERAL
</li>
<li>
FETETRAHEDRON
</li>
<li>
FEBRICK
</li>
</ul>
</p>
<p>
The data to be written or read is assumed to have a logical
organization into three groups:
<ul>
<li>
Node coordinate data;
</li>
<li>
Element definitions, that is, the sequence of node indices
that define each element;
</li>
<li>
Node data, such as finite element coefficients for pressure,
velocity, and so on.
</li>
</ul>
</p>
<p>
<a href = "http://www.tecplot.com/">
The TECPLOT home page</a> contains a description of the
<b>TECPLOT</b> program.
</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>TEC_IO</b> is available in
<a href = "../../f_src/tec_io/tec_io.html">a FORTRAN90 version</a> and
<a href = "../../m_src/tec_io/tec_io.html">a MATLAB version</a>.
</p>
<h3 align = "center">
Related Data and Programs:
</h3>
<p>
<a href = "../../m_src/fem_50/fem_50.html">
FEM_50</a>,
a MATLAB program
which implements a finite element solver in just 50 lines of code.
</p>
<p>
<a href = "../../m_src/fem_50_heat/fem_50_heat.html">
FEM_50_HEAT</a>,
a MATLAB program which
is a modified version of FEM_50 suitable
for solving the heat equation.
</p>
<p>
<a href = "../../m_src/fem_io/fem_io.html">
FEM_IO</a>,
a MATLAB library which
reads or writes an FEM model.
</p>
<p>
<a href = "../../m_src/fem_to_tec/fem_to_tec.html">
FEM_TO_TEC</a>,
a MATLAB program which
reads the three files
defining an FEM model and writes an equivalent TEC file.
</p>
<p>
<a href = "../../data/fem2d/fem2d.html">
FEM2D</a>,
a data directory which
contains examples of 2D FEM files,
text files that describe a 2D finite element geometry
and associated nodal values;
</p>
<p>
<a href = "../../m_src/fem2d_pack/fem2d_pack.html">
FEM2D_PACK</a>,
a MATLAB library which
is useful for finite element calculations.
</p>
<p>
<a href = "../../m_src/fem2d_poisson/fem2d_poisson.html">
FEM2D_POISSON</a>,
a MATLAB program which
solves Poisson's equation
on a square, using the finite element method.
</p>
<p>
<a href = "../../m_src/hot_pipe/hot_pipe.html">
HOT_PIPE</a>,
a MATLAB library which
can be run with FEM_50_HEAT.
</p>
<p>
<a href = "../../m_src/hot_point/hot_point.html">
HOT_POINT</a>,
a MATLAB library which
can be run with <b>FEM_50_HEAT</b>.
</p>
<p>
<a href = "../../data/tec/tec.html">
TEC</a>,
a data directory which
contains a description and examples
of the <b>TEC</b> graphics files used by <b>TECPLOT</b>
</p>
<p>
<a href = "../../m_src/tec_to_fem/tec_to_fem.html">
TEC_TO_FEM</a>,
a MATLAB program which
reads a TEC file
and writes a set of three files defining the
equivalent FEM model.
</p>
<h3 align = "center">
Source Code:
</h3>
<p>
<ul>
<li>
<a href = "ch_cap.m">
ch_cap.m</a>
capitalizes a character.
</li>
<li>
<a href = "ch_eqi.m">
ch_eqi.m</a>
is TRUE if two characters are equal, ignoring case.
</li>
<li>
<a href = "ch_is_alpha.m">
ch_is_alpha.m</a>
is TRUE if a character is alphabetic.
</li>
<li>
<a href = "file_name_inc.m">
file_name_inc.m</a>
"increments" a file name.
</li>
<li>
<a href = "i4mat_transpose_print.m">
i4mat_transpose_print_some.m</a>
prints an I4MAT, transposed.
</li>
<li>
<a href = "i4mat_transpose_print_some.m">
i4mat_transpose_print_some.m</a>
prints some of an I4MAT, transposed.
</li>
<li>
<a href = "r8mat_transpose_print.m">
r8mat_transpose_print.m</a>
prints an R8MAT, transposed.
</li>
<li>
<a href = "r8mat_transpose_print_some.m">
r8mat_transpose_print_some.m</a>
prints some of an R8MAT, transposed.
</li>
<li>
<a href = "s_adjustl.m">
s_adjustl.m</a>
shifts a string to the left, removing initial blanks.
</li>
<li>
<a href = "s_alpha_last.m">
s_alpha_last.m</a>
finds the last alphabetic character in a string.
</li>
<li>
<a href = "s_begin.m">
s_begin.m</a>
is TRUE if two strings match up to the end of the shorter one,
ignoring spaces and capitalization.
</li>
<li>
<a href = "s_behead_substring.m">
s_behead_substring.m</a>
beheads a substring from the beginning of a string, if it
occurs there.
</li>
<li>
<a href = "s_eqi.m">
s_eqi.m</a>
returns "TRUE" if two strings are equal, ignoring case.
</li>
<li>
<a href = "s_inc.m">
s_inc.m</a>
"increments" a string.
</li>
<li>
<a href = "s_len_trim.m">
s_len_trim.m</a>
returns the length of a string to the last nonblank.
</li>
<li>
<a href = "s_replace_ch.m">
s_replace_ch.m</a>
replaces all occurrences of one character by another character.
</li>
<li>
<a href = "s_to_i4.m">
s_to_i4.m</a>
converts a string to an I4.
</li>
<li>
<a href = "s_word_count.m">
s_word_count.m</a>
counts the number of words in a string.
</li>
<li>
<a href = "s_word_extract.m">
s_word_extract.m</a>
extracts the first word from a string.
</li>
<li>
<a href = "tec_read.m">
tec_read.m</a>
reads the information from a TEC file.
</li>
<li>
<a href = "tec_variable_line_parse.m">
tec_variable_line_parse.m</a>
parses the "variables" line of a TEC file.
</li>
<li>
<a href = "tec_write.m">
tec_write.m</a>
writes information to a TEC file.
</li>
<li>
<a href = "tec_zone_line_parse.m">
tec_zone_line_parse.m</a>
parses the "zone" line of a TEC file.
</li>
<li>
<a href = "timestamp.m">
timestamp.m</a>
prints the current YMDHMS date as a timestamp.
</li>
</ul>
</p>
<h3 align = "center">
Examples and Tests:
</h3>
<p>
<ul>
<li>
<a href = "tec_io_test.m">
tec_io_test.m</a>
runs the tests.
</li>
<li>
<a href = "tec_io_test01.m">
tec_io_test01.m</a>
tests TEC_READ by reading "ell.dat";
</li>
<li>
<a href = "tec_io_test02.m">
tec_io_test02.m</a>
tests TEC_WRITE by writing "tiny.dat";
</li>
<li>
<a href = "tec_io_test_output.txt">
tec_io_test_output.txt</a>
printed output from the tests.
</li>
<li>
<a href = "ell.dat">ell.dat</a>,
a TECPLOT ASCII file read by the test program;
</li>
<li>
<a href = "tiny.dat">tiny.dat</a>,
a TECPLOT ASCII file created by the test program;
</li>
</ul>
</p>
<p>
You can go up one level to <a href = "../m_src.html">
the MATLAB source codes</a>.
</p>
<hr>
<i>
Last revised on 26 April 2006.
</i>
<!-- John Burkardt -->
</body>
</html>