diff options
Diffstat (limited to 'src/Cech_complex/example/cech_complex_example_from_points.cpp')
| -rw-r--r-- | src/Cech_complex/example/cech_complex_example_from_points.cpp | 43 |
1 files changed, 10 insertions, 33 deletions
diff --git a/src/Cech_complex/example/cech_complex_example_from_points.cpp b/src/Cech_complex/example/cech_complex_example_from_points.cpp index 882849c3..97327e69 100644 --- a/src/Cech_complex/example/cech_complex_example_from_points.cpp +++ b/src/Cech_complex/example/cech_complex_example_from_points.cpp @@ -1,25 +1,3 @@ -/* 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): Vincent Rouvreau - * - * 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/>. - */ - #include <gudhi/Cech_complex.h> #include <gudhi/Simplex_tree.h> #include <gudhi/distance_functions.h> @@ -37,23 +15,22 @@ int main() { using Cech_complex = Gudhi::cech_complex::Cech_complex<Simplex_tree, Point_cloud>; Point_cloud points; - points.push_back({1.0, 1.0}); - points.push_back({7.0, 0.0}); - points.push_back({4.0, 6.0}); - points.push_back({9.0, 6.0}); - points.push_back({0.0, 14.0}); - points.push_back({2.0, 19.0}); - points.push_back({9.0, 17.0}); + points.push_back({0., 0.}); + points.push_back({0., 2.}); + points.push_back({std::sqrt(3.), 1.}); + points.push_back({1., 0.}); + points.push_back({1., 2.}); + points.push_back({1. - std::sqrt(3.), 1.}); // ---------------------------------------------------------------------------- // Init of a Cech complex from points // ---------------------------------------------------------------------------- - // 7.1 is a magic number to force one blocker, and one non-blocker - Filtration_value threshold = 7.1; - Cech_complex cech_complex_from_points(points, threshold, Gudhi::Euclidean_distance()); + // 5. is a magic number to force one blocker, and one non-blocker + Filtration_value max_radius = 12.; + Cech_complex cech_complex_from_points(points, max_radius); Simplex_tree stree; - cech_complex_from_points.create_complex(stree, 2); + cech_complex_from_points.create_complex(stree, -1); // ---------------------------------------------------------------------------- // Display information about the one skeleton Cech complex // ---------------------------------------------------------------------------- |