fem_to_gmsh_test

fem_to_gmsh_test, a MATLAB program which calls fem_to_gmsh() to convert FEM files representing a 1D, 2D, or 3D mesh into a GMSH mesh file.

Licensing:

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

Related Data and Programs:

fem_to_gmsh, a MATLAB program which reads FEM files definining a 1D, 2D or 3D mesh, namely a file of node coordinates and a file of elements defined by node indices, and creates a gmsh mesh file.

Source Code:

• fem_to_gmsh_test.m, calls all the tests.
• fem_to_gmsh_test.sh, runs all the tests.
• fem_to_gmsh_test.txt, the output file.

CHEBY9 is a 1D interval, [-1,+1], containing 9 nodes and 8 elements.

• cheby9_nodes.txt, the node coordinates.
• cheby9_elements.txt, the elements.
• cheby9.msh, the corresponding GMSH mesh file.

MESH3D is a 3D tetrahedral mesh using 8 nodes and 6 elements.

• mesh3d_nodes.txt, the nodes for the 4-node tet mesh.
• mesh3d_elements.txt, the elements for the 4-node tet mesh.
• mesh3d.msh, the Gmsh msh file version of the data.

RECTANGLE is a 2D rectangular region which has been divided into 3 rows and 4 columns of squares, each then split into two 3-node triangles. The node and element files of this triangulation are converted into a Gmsh msh file describing the same triangulation.

• rectangle_nodes.txt, the node coordinates.
• rectangle_elements.txt, the elements.
• rectangle.png, a PNG image of the triangulation, created by TRIANGULATION_PLOT.
• rectangle.msh, the corresponding Gmsh msh file.