diff options
Diffstat (limited to 'src/Persistence_representations/utilities/persistence_intervals/plot_histogram_of_intervals_lengths.cpp')
-rw-r--r-- | src/Persistence_representations/utilities/persistence_intervals/plot_histogram_of_intervals_lengths.cpp | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/src/Persistence_representations/utilities/persistence_intervals/plot_histogram_of_intervals_lengths.cpp b/src/Persistence_representations/utilities/persistence_intervals/plot_histogram_of_intervals_lengths.cpp new file mode 100644 index 00000000..13d2133f --- /dev/null +++ b/src/Persistence_representations/utilities/persistence_intervals/plot_histogram_of_intervals_lengths.cpp @@ -0,0 +1,65 @@ +/* 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 <vector> +#include <limits> +#include <utility> + +using Persistence_intervals = Gudhi::Persistence_representations::Persistence_intervals; + +int main(int argc, char** argv) { + std::cout << "This program computes a histogram of barcode's length. A number of bins in the histogram is a " + << "parameter of this program. \n"; + if ((argc != 3) && (argc != 4)) { + std::cout << "To run this program, please provide the name of a file with persistence diagram and number of " + << "dominant intervals you would like to get. Set a negative number dominant intervals value " + << "If your file contains only birth-death pairs.\n" + << "The third parameter is the dimension of the persistence that is to be used. If your " + << "file contains only birth-death pairs, you can skip this parameter\n"; + return 1; + } + + unsigned dominant_interval_number = std::numeric_limits<unsigned>::max(); + int nbr = atoi(argv[2]); + if (nbr >= 0) { + dominant_interval_number = static_cast<unsigned>(nbr); + } + + int persistence_dimension = -1; + if (argc == 4) { + persistence_dimension = atoi(argv[3]); + } + + Persistence_intervals p(argv[1], dominant_interval_number); + std::vector<std::pair<double, double> > dominant_intervals = p.dominant_intervals(persistence_dimension); + std::vector<size_t> histogram = p.histogram_of_lengths(10); + + std::stringstream gnuplot_script; + gnuplot_script << argv[1] << "_GnuplotScript"; + std::ofstream out; + out.open(gnuplot_script.str().c_str()); + + out << "set style data histogram" << std::endl; + out << "set style histogram cluster gap 1" << std::endl; + out << "set style fill solid border -1" << std::endl; + out << "plot '-' notitle" << std::endl; + for (size_t i = 0; i != histogram.size(); ++i) { + out << histogram[i] << std::endl; + } + out << std::endl; + out.close(); + + std::cout << "To visualize, install gnuplot and type the command: gnuplot -persist -e \"load \'" + << gnuplot_script.str().c_str() << "\'\"" << std::endl; + return 0; +} |