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author | mcarrier <mcarrier@636b058d-ea47-450e-bf9e-a15bfbe3eedb> | 2017-05-09 14:04:29 +0000 |
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committer | mcarrier <mcarrier@636b058d-ea47-450e-bf9e-a15bfbe3eedb> | 2017-05-09 14:04:29 +0000 |
commit | 01b7bec722e18851acfc826ca572d01a127339c1 (patch) | |
tree | e6cef530da4187ac6841d8d682ca1d0797e54ff5 /src/Nerve_GIC/example/MapperDeltaFunc.cpp | |
parent | aa67dab1eebe3cdba573741857051005ba72cc3b (diff) |
git-svn-id: svn+ssh://scm.gforge.inria.fr/svnroot/gudhi/branches/Nerve_GIC@2408 636b058d-ea47-450e-bf9e-a15bfbe3eedb
Former-commit-id: 324d557360a52e7181d9cf3c7d77c8445a367808
Diffstat (limited to 'src/Nerve_GIC/example/MapperDeltaFunc.cpp')
-rw-r--r-- | src/Nerve_GIC/example/MapperDeltaFunc.cpp | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/src/Nerve_GIC/example/MapperDeltaFunc.cpp b/src/Nerve_GIC/example/MapperDeltaFunc.cpp new file mode 100644 index 00000000..20924b9c --- /dev/null +++ b/src/Nerve_GIC/example/MapperDeltaFunc.cpp @@ -0,0 +1,61 @@ +#include <gudhi/GIC.h> + +void usage(int nbArgs, char * const progName) { + std::cerr << "Error: Number of arguments (" << nbArgs << ") is not correct\n"; + std::cerr << "Usage: " << progName << " filename.off coordinate \n"; + std::cerr << " i.e.: " << progName << " ../../../data/points/human.off 2 --v \n"; + exit(-1); // ----- >> +} + +int main(int argc, char **argv) { + if ((argc != 3) && (argc != 4)) usage(argc, (argv[0] - 1)); + + std::string off_file_name(argv[1]); + std::string func_file_name = argv[2]; + bool verb = 0; if(argc == 4) verb = 1; + + // Type definitions + using Graph_t = boost::adjacency_list < boost::vecS, boost::vecS, boost::undirectedS,\ + boost::property < vertex_filtration_t, Filtration_value >,\ + boost::property < edge_filtration_t, Filtration_value > >; + + // --------------------------------------- + // Init of a Mapper Delta from an OFF file + // --------------------------------------- + + Gudhi::graph_induced_complex::Graph_induced_complex GIC; + GIC.set_verbose(verb); + + GIC.set_graph_from_automatic_rips(off_file_name); + GIC.set_function_from_file(func_file_name); + GIC.set_color_from_file(func_file_name); + GIC.set_automatic_resolution_for_GICMAP(); GIC.set_gain(); + GIC.set_cover_from_function(1); + GIC.find_GICMAP_simplices_with_functional_minimal_cover(); + GIC.plot_with_KeplerMapper(); + + Simplex_tree stree; GIC.create_complex(stree); + + std::streambuf* streambufffer = std::cout.rdbuf(); + std::ostream output_stream(streambufffer); + + // ------------------------------------------ + // Display information about the Mapper Delta + // ------------------------------------------ + + if(verb){ + output_stream << "Mapper Delta is of dimension " << stree.dimension() << + " - " << stree.num_simplices() << " simplices - " << + stree.num_vertices() << " vertices." << std::endl; + + output_stream << "Iterator on Mapper Delta simplices" << std::endl; + for (auto f_simplex : stree.filtration_simplex_range()) { + for (auto vertex : stree.simplex_vertex_range(f_simplex)) { + output_stream << vertex << " "; + } + output_stream << std::endl; + } + } + + return 0; +} |