MESH_DISPLAY
Plot a Polygonal Mesh

MESH_DISPLAY is a MATLAB program which plots the nodes and elements of a polygonal mesh, with optional numbering.

MESH_DISPLAY reads two files describing the node coordinates and the elements of a polygonal mesh, and plots them.

Usage:

mesh_display ( 'prefix', node_vis, element_vis )

• 'prefix'_nodes.txt, the node coordinates.
• 'prefix'_elements.txt, the element file

• 0, do not show the nodes;
• 1, show the nodes;
• 2, show the nodes and label them.

• 0, do not show the element;
• 1, show the element;
• 2, show the element and color them.
• 3, show the element and color them, and label them.

Licensing:

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

Related Data and Programs:

BEZIER_SURFACE_DISPLAY, a MATLAB program which displays a Bezier surface;

FEM_BASIS_T3_DISPLAY, a MATLAB program which displays a basis function associated with a linear triangle ("T3") mesh.

FEM_BASIS_T6_DISPLAY, a MATLAB program which reads a quadratic triangle mesh and displays any associated basis function.

GRID_DISPLAY, a MATLAB library which can display a 2D or 3D grid or sparse grid.

GRIDLINES, a MATLAB library which gives the user more control over drawing gridlines on a graph than the builtin "grid on" command.

MESH_DISPLAY_OPENGL, a C++ program which reads data defining a polygonal mesh and displays it using OpenGL.

MPAS_GRID_DISPLAY, a directory of MATLAB programs which can read an MPAS NETCDF grid file and display the primary polygonal mesh or the dual triangular mesh.

POLYGONAL_SURFACE_DISPLAY, a MATLAB program which displays a surface in 3D described as a set of polygons;

QUAD_SURFACE_DISPLAY, a MATLAB program which plots piecewise bilinear data associated with a QUAD_SURFACE, that is, a 3D surface defined by a quadrilateral mesh;

TET_MESH_DISPLAY, ia MATLAB program which reads in the node and tetra files defining a tet mesh and displays a wireframe image.

TRI_SURFACE_DISPLAY, a MATLAB program which reads data defining a triangular mesh of a 3D surface and displays it.

TRIANGULATION_DISPLAY, a MATLAB program which displays the nodes and elements of a triangulation on the MATLAB graphics screen;

TRIANGULATION_DISPLAY_OPENGL, a C++ program which reads files defining a triangulation and displays an image using Open GL.

TRIANGULATION_PLOT, a MATLAB program which plots a triangulation as a PostScript file.

XY_DISPLAY, a MATLAB program which reads XY information defining points in 2D, and displays an image in a MATLAB graphics window;

XYF_DISPLAY, a MATLAB program which reads XYF information defining points and faces in 2D, and displays an image in a MATLAB graphics window.

XYL_DISPLAY, a MATLAB program which reads XYL information defining points and lines in 2D, and displays an image in a MATLAB graphics window.

XYZ_DISPLAY, a MATLAB program which reads XYZ information defining points in 3D, and displays an image in the MATLAB graphics window.

XYZF_DISPLAY, a MATLAB program which reads XYZF information defining points and faces in 3D, and displays an image using OpenGL.

XYZL_DISPLAY, a MATLAB program which reads XYZL information defining points and lines in 3D, and displays an image in a MATLAB graphics window.

Source Code:

• mesh_display.m the source code.

Examples and Tests:

DRAGON is a mesh of hexagons.

• dragon_nodes.txt, the node coordinates.
• dragon_elements.txt, the nodes that form each element.
• dragon.png, a PNG image of the mesh.

ELL is an L-shaped region covered by triangles.

• ell_nodes.txt, the node coordinates.
• ell_elements.txt, the nodes that form each element.
• ell.png, a PNG image of the mesh.

RECT is a rectangular region covered by quadrilaterals.

• rect_nodes.txt, the node coordinates.
• rect_elements.txt, the nodes that form each element.
• rect.png, a PNG image of the mesh.

Q4 is a rectangular region covered by quadrilaterals, with a hole.

• q4_nodes.txt, the node coordinates.
• q4_elements.txt, the nodes that form each element.
• q4.png, a PNG image of the mesh.

HEX is a mesh of hexagons.

• hex_nodes.txt, the node coordinates.
• hex_elements.txt, the nodes that form each element.
• hex.png, a PNG image of the mesh.

You can go up one level to the MATLAB source codes.