diff options
author | skachano <skachano@636b058d-ea47-450e-bf9e-a15bfbe3eedb> | 2015-03-27 13:09:02 +0000 |
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committer | skachano <skachano@636b058d-ea47-450e-bf9e-a15bfbe3eedb> | 2015-03-27 13:09:02 +0000 |
commit | 4b8b6dce9c433b8a0081d3310a123ee2abda76c8 (patch) | |
tree | d395e1335331c3c81ff47a0fcf14768dc22b6da4 /src/Witness_complex | |
parent | c41277f640fa6d59af11970e7c281ff9d5221d06 (diff) |
Added witness_complex_from_file
git-svn-id: svn+ssh://scm.gforge.inria.fr/svnroot/gudhi/branches/witness@510 636b058d-ea47-450e-bf9e-a15bfbe3eedb
Former-commit-id: 22b61b82bae5fa75545c1eff22619426d5b8b469
Diffstat (limited to 'src/Witness_complex')
-rw-r--r-- | src/Witness_complex/example/witness_complex_from_file.cpp | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/src/Witness_complex/example/witness_complex_from_file.cpp b/src/Witness_complex/example/witness_complex_from_file.cpp new file mode 100644 index 00000000..a0e192f7 --- /dev/null +++ b/src/Witness_complex/example/witness_complex_from_file.cpp @@ -0,0 +1,89 @@ +/* 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): Vincent Rouvreau + * + * Copyright (C) 2014 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 "gudhi/graph_simplicial_complex.h" +#include "gudhi/Witness_complex1.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(); +} + +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; + read_points_cust(file_name, point_vector); + witnessComplex.witness_complex_from_file(point_vector, nbL); + end = clock(); + std::cout << "Howdy world! The process took " + << (double)(end-start)/CLOCKS_PER_SEC << " s. \n"; + +} |