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Diffstat (limited to 'cython/include/Persistent_cohomology_interface.h')
-rw-r--r-- | cython/include/Persistent_cohomology_interface.h | 121 |
1 files changed, 0 insertions, 121 deletions
diff --git a/cython/include/Persistent_cohomology_interface.h b/cython/include/Persistent_cohomology_interface.h deleted file mode 100644 index 8cf71a4e..00000000 --- a/cython/include/Persistent_cohomology_interface.h +++ /dev/null @@ -1,121 +0,0 @@ -/* 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) 2016 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/>. - */ - -#ifndef INCLUDE_PERSISTENT_COHOMOLOGY_INTERFACE_H_ -#define INCLUDE_PERSISTENT_COHOMOLOGY_INTERFACE_H_ - -#include <gudhi/Persistent_cohomology.h> - -#include <vector> -#include <utility> // for std::pair -#include <algorithm> // for sort - -namespace Gudhi { - -template<class FilteredComplex> -class Persistent_cohomology_interface : public -persistent_cohomology::Persistent_cohomology<FilteredComplex, persistent_cohomology::Field_Zp> { - private: - /* - * Compare two intervals by dimension, then by length. - */ - struct cmp_intervals_by_dim_then_length { - explicit cmp_intervals_by_dim_then_length(FilteredComplex * sc) - : sc_(sc) { } - - template<typename Persistent_interval> - bool operator()(const Persistent_interval & p1, const Persistent_interval & p2) { - if (sc_->dimension(get < 0 > (p1)) == sc_->dimension(get < 0 > (p2))) - return (sc_->filtration(get < 1 > (p1)) - sc_->filtration(get < 0 > (p1)) - > sc_->filtration(get < 1 > (p2)) - sc_->filtration(get < 0 > (p2))); - else - return (sc_->dimension(get < 0 > (p1)) > sc_->dimension(get < 0 > (p2))); - } - FilteredComplex* sc_; - }; - - public: - Persistent_cohomology_interface(FilteredComplex* stptr) - : persistent_cohomology::Persistent_cohomology<FilteredComplex, persistent_cohomology::Field_Zp>(*stptr), - stptr_(stptr) { } - - Persistent_cohomology_interface(FilteredComplex* stptr, bool persistence_dim_max) - : persistent_cohomology::Persistent_cohomology<FilteredComplex, - persistent_cohomology::Field_Zp>(*stptr, persistence_dim_max), - stptr_(stptr) { } - - std::vector<std::pair<int, std::pair<double, double>>> get_persistence(int homology_coeff_field, - double min_persistence) { - persistent_cohomology::Persistent_cohomology<FilteredComplex, - persistent_cohomology::Field_Zp>::init_coefficients(homology_coeff_field); - persistent_cohomology::Persistent_cohomology<FilteredComplex, - persistent_cohomology::Field_Zp>::compute_persistent_cohomology(min_persistence); - - // Custom sort and output persistence - cmp_intervals_by_dim_then_length cmp(stptr_); - auto persistent_pairs = persistent_cohomology::Persistent_cohomology<FilteredComplex, - persistent_cohomology::Field_Zp>::get_persistent_pairs(); - std::sort(std::begin(persistent_pairs), std::end(persistent_pairs), cmp); - - std::vector<std::pair<int, std::pair<double, double>>> persistence; - for (auto pair : persistent_pairs) { - persistence.push_back(std::make_pair(stptr_->dimension(get<0>(pair)), - std::make_pair(stptr_->filtration(get<0>(pair)), - stptr_->filtration(get<1>(pair))))); - } - return persistence; - } - - std::vector<std::pair<std::vector<int>, std::vector<int>>> persistence_pairs() { - auto pairs = persistent_cohomology::Persistent_cohomology<FilteredComplex, - persistent_cohomology::Field_Zp>::get_persistent_pairs(); - - std::vector<std::pair<std::vector<int>, std::vector<int>>> persistence_pairs; - persistence_pairs.reserve(pairs.size()); - for (auto pair : pairs) { - std::vector<int> birth; - if (get<0>(pair) != stptr_->null_simplex()) { - for (auto vertex : stptr_->simplex_vertex_range(get<0>(pair))) { - birth.push_back(vertex); - } - } - - std::vector<int> death; - if (get<1>(pair) != stptr_->null_simplex()) { - for (auto vertex : stptr_->simplex_vertex_range(get<1>(pair))) { - death.push_back(vertex); - } - } - - persistence_pairs.push_back(std::make_pair(birth, death)); - } - return persistence_pairs; - } - - private: - // A copy - FilteredComplex* stptr_; -}; - -} // namespace Gudhi - -#endif // INCLUDE_PERSISTENT_COHOMOLOGY_INTERFACE_H_ |