tec_io

tec_io, a MATLAB code which reads or writes a tecplot() TEC graphics file containing a finite element model.

There are several kinds of TEC files; the routines given here can only handle the case where a single ZONE record is used to define finite element data, using a DATAPACKING value of "POINT" (not "BLOCK"), and a ZONETYPE of

• FETRIANGLE
• FEQUADRILATERAL
• FETETRAHEDRON
• FEBRICK

The data to be written or read is assumed to have a logical organization into three groups:

• Node coordinate data;
• Element definitions, that is, the sequence of node indices that define each element;
• Node data, such as finite element coefficients for pressure, velocity, and so on.

https://www.tecplot.com/ contains a description of the TECPLOT program.

Licensing:

The information on this web page is distributed under the MIT license.

Languages:

tec_io is available in a Fortran90 version and a MATLAB version and an Octave version.

Related Data and Programs:

tec_io_test

fem_50, a MATLAB code which implements a finite element solver in just 50 lines of code.

fem_50_heat, a MATLAB code which is a modified version of FEM_50 suitable for solving the heat equation.

fem_io, a MATLAB code which reads or writes an FEM model.

fem_to_tec, a MATLAB code which reads the three files defining an FEM model and writes an equivalent TEC file.

fem2d, a data directory which contains examples of 2D FEM files, text files that describe a 2D finite element geometry and associated nodal values;

fem2d_pack, a MATLAB code which is useful for finite element calculations.

fem2d_poisson, a MATLAB code which solves Poisson's equation on a square, using the finite element method.

hot_pipe, a MATLAB code which can be run with FEM_50_HEAT.

hot_point, a MATLAB code which can be run with FEM_50_HEAT().

tec, a data directory which contains a description and examples of the TEC graphics files used by TECPLOT().

tec_to_fem, a MATLAB code which reads a TEC file and writes a set of three files defining the equivalent FEM model.

Source Code:

• ch_cap.m capitalizes a character.
• ch_eqi.m is TRUE if two characters are equal, ignoring case.
• ch_is_alpha.m is TRUE if a character is alphabetic.
• file_name_inc.m "increments" a file name.
• i4mat_transpose_print_some.m prints an I4MAT, transposed.
• i4mat_transpose_print_some.m prints some of an I4MAT, transposed.
• r8mat_transpose_print.m prints an R8MAT, transposed.
• r8mat_transpose_print_some.m prints some of an R8MAT, transposed.
• s_adjustl.m shifts a string to the left, removing initial blanks.
• s_alpha_last.m finds the last alphabetic character in a string.
• s_begin.m is TRUE if two strings match up to the end of the shorter one, ignoring spaces and capitalization.
• s_behead_substring.m beheads a substring from the beginning of a string, if it occurs there.
• s_eqi.m returns "TRUE" if two strings are equal, ignoring case.
• s_inc.m "increments" a string.
• s_len_trim.m returns the length of a string to the last nonblank.
• s_replace_ch.m replaces all occurrences of one character by another character.
• s_to_i4.m converts a string to an I4.
• s_word_count.m counts the number of words in a string.
• s_word_extract.m extracts the first word from a string.
• tec_read.m reads the information from a TEC file.
• tec_variable_line_parse.m parses the "variables" line of a TEC file.
• tec_write.m writes information to a TEC file.
• tec_zone_line_parse.m parses the "zone" line of a TEC file.
• timestamp.m prints the current YMDHMS date as a timestamp.