diff options
Diffstat (limited to 'example/Rips_complex/example_rips_complex_from_csv_distance_matrix_file.cpp')
-rw-r--r-- | example/Rips_complex/example_rips_complex_from_csv_distance_matrix_file.cpp | 72 |
1 files changed, 0 insertions, 72 deletions
diff --git a/example/Rips_complex/example_rips_complex_from_csv_distance_matrix_file.cpp b/example/Rips_complex/example_rips_complex_from_csv_distance_matrix_file.cpp deleted file mode 100644 index 9e182f1e..00000000 --- a/example/Rips_complex/example_rips_complex_from_csv_distance_matrix_file.cpp +++ /dev/null @@ -1,72 +0,0 @@ -#include <gudhi/Rips_complex.h> -// to construct Rips_complex from a csv file representing a distance matrix -#include <gudhi/reader_utils.h> -#include <gudhi/Simplex_tree.h> -#include <gudhi/distance_functions.h> - -#include <iostream> -#include <string> -#include <vector> - -void usage(int nbArgs, char * const progName) { - std::cerr << "Error: Number of arguments (" << nbArgs << ") is not correct\n"; - std::cerr << "Usage: " << progName << " filename.csv threshold dim_max [ouput_file.txt]\n"; - std::cerr << " i.e.: " << progName << " ../../data/distance_matrix/full_square_distance_matrix.csv 1.0 3\n"; - exit(-1); // ----- >> -} - -int main(int argc, char **argv) { - if ((argc != 4) && (argc != 5)) usage(argc, (argv[0] - 1)); - - std::string csv_file_name(argv[1]); - double threshold = atof(argv[2]); - int dim_max = atoi(argv[3]); - - // Type definitions - using Simplex_tree = Gudhi::Simplex_tree<>; - using Filtration_value = Simplex_tree::Filtration_value; - using Rips_complex = Gudhi::rips_complex::Rips_complex<Filtration_value>; - using Distance_matrix = std::vector<std::vector<Filtration_value>>; - - // ---------------------------------------------------------------------------- - // Init of a Rips complex from a distance matrix in a csv file - // Default separator is ';' - // ---------------------------------------------------------------------------- - Distance_matrix distances = Gudhi::read_lower_triangular_matrix_from_csv_file<Filtration_value>(csv_file_name); - Rips_complex rips_complex_from_file(distances, threshold); - - std::streambuf* streambufffer; - std::ofstream ouput_file_stream; - - if (argc == 5) { - ouput_file_stream.open(std::string(argv[4])); - streambufffer = ouput_file_stream.rdbuf(); - } else { - streambufffer = std::cout.rdbuf(); - } - - Simplex_tree stree; - rips_complex_from_file.create_complex(stree, dim_max); - std::ostream output_stream(streambufffer); - - // ---------------------------------------------------------------------------- - // Display information about the Rips complex - // ---------------------------------------------------------------------------- - output_stream << "Rips complex is of dimension " << stree.dimension() << - " - " << stree.num_simplices() << " simplices - " << - stree.num_vertices() << " vertices." << std::endl; - - output_stream << "Iterator on Rips complex simplices in the filtration order, with [filtration value]:" << - std::endl; - for (auto f_simplex : stree.filtration_simplex_range()) { - output_stream << " ( "; - for (auto vertex : stree.simplex_vertex_range(f_simplex)) { - output_stream << vertex << " "; - } - output_stream << ") -> " << "[" << stree.filtration(f_simplex) << "] "; - output_stream << std::endl; - } - - ouput_file_stream.close(); - return 0; -} |