triangulation_boundary_nodes_test, a MATLAB code which calls triangulation_boundary_nodes(), which analyzes the triangulation of a region, and identifies each boundary node with the label "1".
The computer code and data files described and made available on this web page are distributed under the MIT license
triangulation_boundary_nodes, a MATLAB code which reads data defining a triangulation, determines which nodes lie on the boundary, and writes their coordinates to a file.
ELBOW is a curved region, looking like an elbow, that lies inside the unit square. It is triangulated using order 3 triangles. There are 320 nodes and 568 triangles. There are 66 nodes on the boundary.
LAKE is an irregular lake-shaped region with an "island". It is triangulated using order 3 triangles.