From 9899ae167f281d10b1684dfcd02c6838c5bf28df Mon Sep 17 00:00:00 2001 From: Gard Spreemann Date: Fri, 2 Feb 2018 13:51:45 +0100 Subject: GUDHI 2.1.0 as released by upstream in a tarball. --- .../plot_histogram_of_intervals_lengths.cpp | 77 ++++++++++++++++++++++ 1 file changed, 77 insertions(+) create mode 100644 utilities/Persistence_representations/persistence_intervals/plot_histogram_of_intervals_lengths.cpp (limited to 'utilities/Persistence_representations/persistence_intervals/plot_histogram_of_intervals_lengths.cpp') diff --git a/utilities/Persistence_representations/persistence_intervals/plot_histogram_of_intervals_lengths.cpp b/utilities/Persistence_representations/persistence_intervals/plot_histogram_of_intervals_lengths.cpp new file mode 100644 index 00000000..ccb5b645 --- /dev/null +++ b/utilities/Persistence_representations/persistence_intervals/plot_histogram_of_intervals_lengths.cpp @@ -0,0 +1,77 @@ +/* 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): Pawel Dlotko + * + * 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 . + */ + +#include + +#include +#include +#include +#include + +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::max(); + int nbr = atoi(argv[2]); + if (nbr >= 0) { + dominant_interval_number = static_cast(nbr); + } + + int persistence_dimension = -1; + if (argc == 4) { + persistence_dimension = atoi(argv[3]); + } + + Persistence_intervals p(argv[1], dominant_interval_number); + std::vector > dominant_intervals = p.dominant_intervals(persistence_dimension); + std::vector 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; +} -- cgit v1.2.3