triangulation_plot

triangulation_plot, a C++ code which plots a triangulation.

The code reads one file listing the nodes, and a second file consisting of groups of 3 or 6 nodes that make up triangles, and creates an Encapsulated PostScript image of the triangulation.

Usage:

triangulation_plot prefix node_vis triangle_vis

• prefix_nodes.txt, the node coordinates (input);
• prefix_elements.txt, the triangulation (input);
• prefix.eps, the plot file (output);

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

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

Licensing:

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

Languages:

triangulation_plot is available in a C++ version and a FORTRAN90 version and a MATLAB version.

Related Data and Programs:

TRIANGLE, a C program which computes a triangulation of a geometric region.

TRIANGULATION, a C++ code which is useful for working with triangulations.

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

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

TRIANGULATION_NODE_TO_ELEMENT, a C++ code which reads files describing a set of nodes, their triangulation, and the value of one or more quantities at each node, and outputs a file that averages the quantities for each element. This operation in effect creates an "order1" finite element model of the data.

TRIANGULATION_ORDER3, a directory which contains a description and examples of order 3 triangulations.

TRIANGULATION_ORDER6, a directory which contains a description and examples of order 6 triangulations.

triangulation_plot_test

TRIANGULATION_SVG, a C++ code which creates an SVG image of a triangulation, which can be displayed by a web browser.

Reference:

1. Marc deBerg, Marc Krevald, Mark Overmars, Otfried Schwarzkopf,
   Computational Geometry,
   Springer, 2000,
   ISBN: 3-540-65620-0,
   LC: QA448.D38.C65.
2. Joseph ORourke,
   Computational Geometry,
   Second Edition,
   Cambridge, 1998,
   ISBN: 0521649765,
   LC: QA448.D38.

Source Code:

• triangulation_plot.cpp, the source code.
• triangulation_plot.sh, compiles the source code.