diff options
Diffstat (limited to 'src/python/include/Persistent_cohomology_interface.h')
-rw-r--r-- | src/python/include/Persistent_cohomology_interface.h | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/src/python/include/Persistent_cohomology_interface.h b/src/python/include/Persistent_cohomology_interface.h index e5a3dfba..945378a0 100644 --- a/src/python/include/Persistent_cohomology_interface.h +++ b/src/python/include/Persistent_cohomology_interface.h @@ -12,6 +12,8 @@ #define INCLUDE_PERSISTENT_COHOMOLOGY_INTERFACE_H_ #include <gudhi/Persistent_cohomology.h> +#include <gudhi/Simplex_tree.h> // for Extended_simplex_type + #include <cstdlib> #include <vector> @@ -223,6 +225,44 @@ persistent_cohomology::Persistent_cohomology<FilteredComplex, persistent_cohomol return out; } + using Filtration_value = typename FilteredComplex::Filtration_value; + using Birth_death = std::pair<Filtration_value, Filtration_value>; + using Persistence_subdiagrams = std::vector<std::vector<std::pair<int, Birth_death>>>; + + Persistence_subdiagrams compute_extended_persistence_subdiagrams(Filtration_value min_persistence){ + Persistence_subdiagrams pers_subs(4); + auto const& persistent_pairs = Base::get_persistent_pairs(); + for (auto pair : persistent_pairs) { + std::pair<Filtration_value, Extended_simplex_type> px = stptr_->decode_extended_filtration(stptr_->filtration(get<0>(pair)), + stptr_->efd); + std::pair<Filtration_value, Extended_simplex_type> py = stptr_->decode_extended_filtration(stptr_->filtration(get<1>(pair)), + stptr_->efd); + std::pair<int, Birth_death> pd_point = std::make_pair(stptr_->dimension(get<0>(pair)), + std::make_pair(px.first, py.first)); + if(std::abs(px.first - py.first) > min_persistence){ + //Ordinary + if (px.second == Extended_simplex_type::UP && py.second == Extended_simplex_type::UP){ + pers_subs[0].push_back(pd_point); + } + // Relative + else if (px.second == Extended_simplex_type::DOWN && py.second == Extended_simplex_type::DOWN){ + pers_subs[1].push_back(pd_point); + } + else{ + // Extended+ + if (px.first < py.first){ + pers_subs[2].push_back(pd_point); + } + //Extended- + else{ + pers_subs[3].push_back(pd_point); + } + } + } + } + return pers_subs; + } + private: // A copy FilteredComplex* stptr_; |