diff options
Diffstat (limited to 'src/cython/example')
3 files changed, 50 insertions, 6 deletions
diff --git a/src/cython/example/sparse_rips_persistence_diagram.py b/src/cython/example/sparse_rips_persistence_diagram.py new file mode 100755 index 00000000..d58c244c --- /dev/null +++ b/src/cython/example/sparse_rips_persistence_diagram.py @@ -0,0 +1,43 @@ +#!/usr/bin/env python + +import gudhi + +"""This file is part of the Gudhi Library. The Gudhi library + (Geometric Understanding in Higher Dimensions) is a generic C++ + library for computational topology. + + Author(s): Marc Glisse + + Copyright (C) 2018 Inria + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see <http://www.gnu.org/licenses/>. +""" + +__author__ = "Marc Glisse" +__copyright__ = "Copyright (C) 2018 Inria" +__license__ = "GPL v3" + +print("#####################################################################") +print("Sparse RipsComplex creation from points") +rips = gudhi.RipsComplex(points=[[0, 0], [0, 0.1], [1, 0], [0, 1], [1, 1]], + max_edge_length=42, sparse=.5) + +simplex_tree = rips.create_simplex_tree(max_dimension=2) + + +diag = simplex_tree.persistence(homology_coeff_field=2, min_persistence=0) +print("diag=", diag) + +pplot = gudhi.plot_persistence_diagram(diag) +pplot.show() diff --git a/src/cython/example/tangential_complex_plain_homology_from_off_file_example.py b/src/cython/example/tangential_complex_plain_homology_from_off_file_example.py index 0f8f5e80..536517d1 100755 --- a/src/cython/example/tangential_complex_plain_homology_from_off_file_example.py +++ b/src/cython/example/tangential_complex_plain_homology_from_off_file_example.py @@ -50,6 +50,7 @@ with open(args.file, 'r') as f: print("TangentialComplex creation from points read in a OFF file") tc = gudhi.TangentialComplex(intrisic_dim = args.intrisic_dim, off_file=args.file) + tc.compute_tangential_complex() st = tc.create_simplex_tree() message = "Number of simplices=" + repr(st.num_simplices()) diff --git a/src/cython/example/witness_complex_from_nearest_landmark_table.py b/src/cython/example/witness_complex_from_nearest_landmark_table.py index e6b295ee..1b79d9b2 100755 --- a/src/cython/example/witness_complex_from_nearest_landmark_table.py +++ b/src/cython/example/witness_complex_from_nearest_landmark_table.py @@ -30,14 +30,14 @@ __license__ = "GPL v3" print("#####################################################################") print("WitnessComplex creation from nearest landmark table") -nearest_landmark_table = [[[0, 0], [1, 1], [2, 2], [3, 3], [4, 4]], - [[1, 0], [2, 1], [3, 2], [4, 3], [0, 4]], - [[2, 0], [3, 1], [4, 2], [0, 3], [1, 4]], - [[3, 0], [4, 1], [0, 2], [1, 3], [2, 4]], - [[4, 0], [0, 1], [1, 2], [2, 3], [3, 4]]] +nearest_landmark_table = [[[0, 0.0], [1, 0.1], [2, 0.2], [3, 0.3], [4, 0.4]], + [[1, 0.0], [2, 0.1], [3, 0.2], [4, 0.3], [0, 0.4]], + [[2, 0.0], [3, 0.1], [4, 0.2], [0, 0.3], [1, 0.4]], + [[3, 0.0], [4, 0.1], [0, 0.2], [1, 0.3], [2, 0.4]], + [[4, 0.0], [0, 0.1], [1, 0.2], [2, 0.3], [3, 0.4]]] witness_complex = StrongWitnessComplex(nearest_landmark_table=nearest_landmark_table) -simplex_tree = witness_complex.create_simplex_tree(max_alpha_square=4.1) +simplex_tree = witness_complex.create_simplex_tree(max_alpha_square=0.41) message = "Number of simplices: " + repr(simplex_tree.num_simplices()) print(message) |