Witness_complex/example_nearest_landmark_table.cpp
/* 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): Siargey Kachanovich
*
* Copyright (C) 2016 INRIA (France)
*
* 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/>.
*/
#define BOOST_PARAMETER_MAX_ARITY 12
#include <gudhi/Simplex_tree.h>
#include <gudhi/Witness_complex.h>
#include <gudhi/Persistent_cohomology.h>
#include <iostream>
#include <fstream>
#include <utility>
#include <string>
#include <vector>
int main(int argc, char * const argv[]) {
using Nearest_landmark_range = std::vector<std::pair<std::size_t, double>>;
using Nearest_landmark_table = std::vector<Nearest_landmark_range>;
Simplex_tree simplex_tree;
Nearest_landmark_table nlt;
// Example contains 5 witnesses and 5 landmarks
Nearest_landmark_range w0 = {std::make_pair(0, 0), std::make_pair(1, 1), std::make_pair(2, 2),
std::make_pair(3, 3), std::make_pair(4, 4)}; nlt.push_back(w0);
Nearest_landmark_range w1 = {std::make_pair(1, 0), std::make_pair(2, 1), std::make_pair(3, 2),
std::make_pair(4, 3), std::make_pair(0, 4)}; nlt.push_back(w1);
Nearest_landmark_range w2 = {std::make_pair(2, 0), std::make_pair(3, 1), std::make_pair(4, 2),
std::make_pair(0, 3), std::make_pair(1, 4)}; nlt.push_back(w2);
Nearest_landmark_range w3 = {std::make_pair(3, 0), std::make_pair(4, 1), std::make_pair(0, 2),
std::make_pair(1, 3), std::make_pair(2, 4)}; nlt.push_back(w3);
Nearest_landmark_range w4 = {std::make_pair(4, 0), std::make_pair(0, 1), std::make_pair(1, 2),
std::make_pair(2, 3), std::make_pair(3, 4)}; nlt.push_back(w4);
Witness_complex witness_complex(nlt);
witness_complex.create_complex(simplex_tree, 4.1);
std::cout << "Number of simplices: " << simplex_tree.num_simplices() << std::endl;
Persistent_cohomology pcoh(simplex_tree);
// initializes the coefficient field for homology
}
GUDHI  Version 2.1.0  - C++ library for Topological Data Analysis (TDA) and Higher Dimensional Geometry Understanding.  - Copyright : GPL v3 Generated on Fri Feb 2 2018 14:51:32 for GUDHI by Doxygen 1.8.11