diff options
Diffstat (limited to 'src/Witness_complex/example/witness_complex_from_off.cpp')
-rw-r--r-- | src/Witness_complex/example/witness_complex_from_off.cpp | 184 |
1 files changed, 0 insertions, 184 deletions
diff --git a/src/Witness_complex/example/witness_complex_from_off.cpp b/src/Witness_complex/example/witness_complex_from_off.cpp deleted file mode 100644 index 948f09a8..00000000 --- a/src/Witness_complex/example/witness_complex_from_off.cpp +++ /dev/null @@ -1,184 +0,0 @@ -/* 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): Siargey Kachanovich - * - * Copyright (C) 2015 INRIA Sophia Antipolis-Méditerranée (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 <http://www.gnu.org/licenses/>. - */ - -#include <iostream> -#include <fstream> -#include <ctime> -#include <sys/types.h> -#include <sys/stat.h> - -//#include <stdlib.h> - -//#include "gudhi/graph_simplicial_complex.h" -#include "gudhi/Witness_complex.h" -#include "gudhi/reader_utils.h" - -using namespace Gudhi; - -typedef std::vector< Vertex_handle > typeVectorVertex; -typedef std::vector< std::vector <double> > Point_Vector; -//typedef std::pair<typeVectorVertex, Filtration_value> typeSimplex; -//typedef std::pair< Simplex_tree<>::Simplex_handle, bool > typePairSimplexBool; - - -/** - * \brief Customized version of read_points - * which takes into account a possible nbP first line - * - */ -inline void -read_points_cust ( std::string file_name , std::vector< std::vector< double > > & points) -{ - std::ifstream in_file (file_name.c_str(),std::ios::in); - if(!in_file.is_open()) - { - std::cerr << "Unable to open file " << file_name << std::endl; - return; - } - std::string line; - double x; - while( getline ( in_file , line ) ) - { - std::vector< double > point; - std::istringstream iss( line ); - while(iss >> x) { point.push_back(x); } - if (point.size() != 1) - points.push_back(point); - } - in_file.close(); -} - -/** - * \brief Rock age method of reading off file - * - */ -inline void -off_reader_cust ( std::string file_name , std::vector< std::vector< double > > & points) -{ - std::ifstream in_file (file_name.c_str(),std::ios::in); - if(!in_file.is_open()) - { - std::cerr << "Unable to open file " << file_name << std::endl; - return; - } - std::string line; - double x; - // Line OFF. No need in it - if (!getline(in_file, line)) - { - std::cerr << "No line OFF\n"; - return; - } - // Line with 3 numbers. No need - if (!getline(in_file, line)) - { - std::cerr << "No line with 3 numbers\n"; - return; - } - // Reading points - while( getline ( in_file , line ) ) - { - std::vector< double > point; - std::istringstream iss( line ); - while(iss >> x) { point.push_back(x); } - points.push_back(point); - } - in_file.close(); -} - -int main (int argc, char * const argv[]) -{ - if (argc != 3) - { - std::cerr << "Usage: " << argv[0] - << " path_to_point_file nbL \n"; - return 0; - } - std::string file_name = argv[1]; - int nbL = atoi(argv[2]); - - clock_t start, end; - //Construct the Simplex Tree - Witness_complex<> witnessComplex; - - /* - std::cout << "Let the carnage begin!\n"; - start = clock(); - Point_Vector point_vector; - off_reader_cust(file_name, point_vector); - std::cout << "Successfully read the points\n"; - witnessComplex.setNbL(nbL); - witnessComplex.witness_complex_from_points(point_vector); - end = clock(); - std::cout << "Howdy world! The process took " - << (double)(end-start)/CLOCKS_PER_SEC << " s. \n"; - char buffer[100]; - int i = sprintf(buffer,"%s_%s_result.txt",argv[1],argv[2]); - if (i >= 0) - { - std::string out_file = (std::string)buffer; - std::ofstream ofs (out_file, std::ofstream::out); - witnessComplex.st_to_file(ofs); - ofs.close(); - } - */ - std::cout << "Let the carnage begin!\n"; - Point_Vector point_vector; - off_reader_cust(file_name, point_vector); - //std::cout << "Successfully read the points\n"; - witnessComplex.setNbL(nbL); - // witnessComplex.witness_complex_from_points(point_vector); - std::vector<std::vector< int > > WL; - std::set<int> L; - start = clock(); - //witnessComplex.landmark_choice_by_furthest_points(point_vector, point_vector.size(), WL); - witnessComplex.landmark_choice_by_random_points(point_vector, point_vector.size(), L); - witnessComplex.nearest_landmarks(point_vector,L,WL); - end = clock(); - std::cout << "Landmark choice took " - << (double)(end-start)/CLOCKS_PER_SEC << " s. \n"; - // Write the WL matrix in a file - mkdir("output", S_IRWXU); - const size_t last_slash_idx = file_name.find_last_of("/"); - if (std::string::npos != last_slash_idx) - { - file_name.erase(0, last_slash_idx + 1); - } - std::string out_file = "output/"+file_name+"_"+argv[2]+".wl"; - //write_wl(out_file,WL); - start = clock(); - witnessComplex.witness_complex(WL); - // - end = clock(); - std::cout << "Howdy world! The process took " - << (double)(end-start)/CLOCKS_PER_SEC << " s. \n"; - - out_file = "output/"+file_name+"_"+argv[2]+".stree"; - std::ofstream ofs (out_file, std::ofstream::out); - witnessComplex.st_to_file(ofs); - ofs.close(); - - out_file = "output/"+file_name+"_"+argv[2]+".badlinks"; - std::ofstream ofs2(out_file, std::ofstream::out); - witnessComplex.write_bad_links(ofs2); - ofs2.close(); -} |