Function [V,F] = removenonusedvertices(V,F) returns a new triangular mesh after removing vertices which are not used to define the given triangles. Variable V has three columns containing the x,y,z coordinates, respectively. Each row in V contains thus a vertex. Variable F has three columns containing the indices to the rows in V, representing the three vertices by which a triangle is defined. The validity of the input is not checked! (c) 2026 fabien van mook 2026.08.20 release of this file within package "fvm-geometry" under GNU GPLv3+