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persistence_intervals.cpp
/* This file is part of the Gudhi Library - https://gudhi.inria.fr/ - which is released under MIT.
* See file LICENSE or go to https://gudhi.inria.fr/licensing/ for full license details.
* Author(s): Pawel Dlotko
*
* Copyright (C) 2016 Inria
*
* Modification(s):
* - YYYY/MM Author: Description of the modification
*/
#include <gudhi/Persistence_intervals.h>
#include <iostream>
#include <utility>
#include <vector>
using Persistence_intervals = Gudhi::Persistence_representations::Persistence_intervals;
int main(int argc, char** argv) {
if (argc != 2) {
std::clog << "To run this program, please provide the name of a file with persistence diagram \n";
return 1;
}
Persistence_intervals p(argv[1]);
std::pair<double, double> min_max_ = p.get_x_range();
std::clog << "Birth-death range : " << min_max_.first << " " << min_max_.second << std::endl;
std::vector<double> dominant_ten_intervals_length = p.length_of_dominant_intervals(10);
std::clog << "Length of ten dominant intervals : " << std::endl;
for (size_t i = 0; i != dominant_ten_intervals_length.size(); ++i) {
std::clog << dominant_ten_intervals_length[i] << std::endl;
}
std::vector<std::pair<double, double> > ten_dominant_intervals = p.dominant_intervals(10);
std::clog << "Here are the dominant intervals : " << std::endl;
for (size_t i = 0; i != ten_dominant_intervals.size(); ++i) {
std::clog << "( " << ten_dominant_intervals[i].first << "," << ten_dominant_intervals[i].second << std::endl;
}
std::vector<size_t> histogram = p.histogram_of_lengths(10);
std::clog << "Here is the histogram of barcode's length : " << std::endl;
for (size_t i = 0; i != histogram.size(); ++i) {
std::clog << histogram[i] << " ";
}
std::clog << std::endl;
std::vector<size_t> cumulative_histogram = p.cumulative_histogram_of_lengths(10);
std::clog << "Cumulative histogram : " << std::endl;
for (size_t i = 0; i != cumulative_histogram.size(); ++i) {
std::clog << cumulative_histogram[i] << " ";
}
std::clog << std::endl;
std::vector<double> char_funct_diag = p.characteristic_function_of_diagram(min_max_.first, min_max_.second);
std::clog << "Characteristic function of diagram : " << std::endl;
for (size_t i = 0; i != char_funct_diag.size(); ++i) {
std::clog << char_funct_diag[i] << " ";
}
std::clog << std::endl;
std::vector<double> cumul_char_funct_diag =
p.cumulative_characteristic_function_of_diagram(min_max_.first, min_max_.second);
std::clog << "Cumulative characteristic function of diagram : " << std::endl;
for (size_t i = 0; i != cumul_char_funct_diag.size(); ++i) {
std::clog << cumul_char_funct_diag[i] << " ";
}
std::clog << std::endl;
std::clog << "Persistence Betti numbers \n";
std::vector<std::pair<double, size_t> > pbns = p.compute_persistent_betti_numbers();
for (size_t i = 0; i != pbns.size(); ++i) {
std::clog << pbns[i].first << " " << pbns[i].second << std::endl;
}
return 0;
}
Gudhi::Persistence_representations::Persistence_intervals
Definition Persistence_intervals.h:37
Gudhi::Persistence_representations::Persistence_intervals::compute_persistent_betti_numbers
std::vector< std::pair< double, size_t > > compute_persistent_betti_numbers() const
Definition Persistence_intervals.h:429
Gudhi::Persistence_representations::Persistence_intervals::get_x_range
std::pair< double, double > get_x_range() const
Definition Persistence_intervals.h:59
Gudhi::Persistence_representations::Persistence_intervals::cumulative_characteristic_function_of_diagram
std::vector< double > cumulative_characteristic_function_of_diagram(double x_min, double x_max, size_t number_of_bins=10) const
Definition Persistence_intervals.h:412
Gudhi::Persistence_representations::Persistence_intervals::characteristic_function_of_diagram
std::vector< double > characteristic_function_of_diagram(double x_min, double x_max, size_t number_of_bins=10) const
Definition Persistence_intervals.h:362
Gudhi::Persistence_representations::Persistence_intervals::dominant_intervals
std::vector< std::pair< double, double > > dominant_intervals(size_t where_to_cut=100) const
Definition Persistence_intervals.h:281
Gudhi::Persistence_representations::Persistence_intervals::cumulative_histogram_of_lengths
std::vector< size_t > cumulative_histogram_of_lengths(size_t number_of_bins=10) const
Definition Persistence_intervals.h:350
Gudhi::Persistence_representations::Persistence_intervals::length_of_dominant_intervals
std::vector< double > length_of_dominant_intervals(size_t where_to_cut=100) const
Definition Persistence_intervals.h:266
Gudhi::Persistence_representations::Persistence_intervals::histogram_of_lengths
std::vector< size_t > histogram_of_lengths(size_t number_of_bins=10) const
Definition Persistence_intervals.h:303