From f6bd8bf87d5033a6f9c4ce726bfb040ccb6b452f Mon Sep 17 00:00:00 2001 From: skachano Date: Thu, 9 Apr 2015 07:36:16 +0000 Subject: Added witness complex from wl matrix git-svn-id: svn+ssh://scm.gforge.inria.fr/svnroot/gudhi/branches/witness@557 636b058d-ea47-450e-bf9e-a15bfbe3eedb Former-commit-id: 61865da9db4f3a4a42b1d4e9e60a33b7671e5df2 --- src/Witness_complex/example/CMakeLists.txt | 4 + .../example/witness_complex_from_wl_matrix.cpp | 160 +++++++++++++++++++++ 2 files changed, 164 insertions(+) create mode 100644 src/Witness_complex/example/witness_complex_from_wl_matrix.cpp (limited to 'src') diff --git a/src/Witness_complex/example/CMakeLists.txt b/src/Witness_complex/example/CMakeLists.txt index 74007c65..51f7976b 100644 --- a/src/Witness_complex/example/CMakeLists.txt +++ b/src/Witness_complex/example/CMakeLists.txt @@ -7,6 +7,10 @@ add_test(simple_witness_complex ${CMAKE_CURRENT_BINARY_DIR}/simple_witness_compl add_executable( witness_complex_from_file witness_complex_from_file.cpp ) add_test( witness_complex_from_bunny &{CMAKE_CURRENT_BINARY_DIR}/witness_complex_from_file ${CMAKE_SOURCE_DIR}/data/points/bunny_5000 ) +add_executable( witness_complex_from_off witness_complex_from_off.cpp ) + +add_executable( witness_complex_from_wl_matrix witness_complex_from_wl_matrix.cpp ) + # An example with Simplex-tree using CGAL alpha_shapes_3 #if(GMP_FOUND AND CGAL_FOUND) # message("CGAL_lib = ${CGAL_LIBRARIES_DIR}") diff --git a/src/Witness_complex/example/witness_complex_from_wl_matrix.cpp b/src/Witness_complex/example/witness_complex_from_wl_matrix.cpp new file mode 100644 index 00000000..2fec499c --- /dev/null +++ b/src/Witness_complex/example/witness_complex_from_wl_matrix.cpp @@ -0,0 +1,160 @@ +/* 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 . + */ + +#include +#include +#include + +#include +#include +//#include + +//#include "gudhi/graph_simplicial_complex.h" +#include "gudhi/Witness_complex.h" +#include "gudhi/reader_utils.h" +//#include + +using namespace Gudhi; +//using namespace boost::filesystem; + +typedef std::vector< Vertex_handle > typeVectorVertex; +typedef std::vector< std::vector > Point_Vector; +//typedef std::pair 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(); +} + +void write_wl( std::string file_name, std::vector< std::vector > & WL) +{ + std::ofstream ofs (file_name, std::ofstream::out); + for (auto w : WL) + { + for (auto l: w) + ofs << l << " "; + ofs << "\n"; + } + ofs.close(); +} + +void read_wl( std::string file_name, std::vector< std::vector > & WL) +{ + 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; + int x; + while( getline ( in_file , line ) ) + { + std::vector< int > witness; + std::istringstream iss( line ); + while(iss >> x) { witness.push_back(x); } + WL.push_back(witness); + } + in_file.close(); + +} + +int main (int argc, char * const argv[]) +{ + if (argc != 2) + { + std::cerr << "Usage: " << argv[0] + << " path_to_point_file \n"; + return 0; + } + /* + boost::filesystem::path p; + + for (; argc > 2; --argc, ++argv) + p /= argv[1]; + */ + 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"; + Point_Vector point_vector; + read_points_cust(file_name, point_vector); + //std::cout << "Successfully read the points\n"; + // witnessComplex.witness_complex_from_points(point_vector); + std::vector > WL; + read_wl(file_name,WL); + witnessComplex.setNbL(WL[0].size()); + // Write the WL matrix in a file + std::string out_file; + 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"; + /* + 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(); + } + */ + + out_file = "output/"+file_name+"_"+argv[2]+".stree"; + std::ofstream ofs (out_file, std::ofstream::out); + witnessComplex.st_to_file(ofs); + ofs.close(); + +} -- cgit v1.2.3