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author | mcarrier <mcarrier@636b058d-ea47-450e-bf9e-a15bfbe3eedb> | 2017-05-08 16:56:25 +0000 |
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committer | mcarrier <mcarrier@636b058d-ea47-450e-bf9e-a15bfbe3eedb> | 2017-05-08 16:56:25 +0000 |
commit | aa67dab1eebe3cdba573741857051005ba72cc3b (patch) | |
tree | 7309c28eed262432b9c2f468ac8b7d4bf2319322 /src/Nerve_GIC/example/Nerve.cpp | |
parent | 0c9fc1c2ed4302f80761e97e4c08a03f7043c857 (diff) |
git-svn-id: svn+ssh://scm.gforge.inria.fr/svnroot/gudhi/branches/Nerve_GIC@2406 636b058d-ea47-450e-bf9e-a15bfbe3eedb
Former-commit-id: 2d857904595833667d469db97c746bbd8696eac4
Diffstat (limited to 'src/Nerve_GIC/example/Nerve.cpp')
-rw-r--r-- | src/Nerve_GIC/example/Nerve.cpp | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/src/Nerve_GIC/example/Nerve.cpp b/src/Nerve_GIC/example/Nerve.cpp new file mode 100644 index 00000000..adcc715d --- /dev/null +++ b/src/Nerve_GIC/example/Nerve.cpp @@ -0,0 +1,63 @@ +#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 resolution gain --v \n"; + std::cerr << " i.e.: " << progName << " ../../data/points/human.off 2 1 0.3 --v \n"; + exit(-1); // ----- >> +} + +int main(int argc, char **argv) { + if ((argc != 6) && (argc != 7)) usage(argc, (argv[0] - 1)); + + std::string off_file_name(argv[1]); + int coord = atoi(argv[2]); + double resolution = atof(argv[3]); + double gain = atof(argv[4]); + bool verb = 0; if(argc == 6) 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 Nerve from an OFF file + // -------------------------------- + + Gudhi::graph_induced_complex::Graph_induced_complex GIC; + GIC.set_verbose(verb); + + GIC.set_function_from_coordinate(coord, off_file_name); + GIC.set_color_from_coordinate(coord, off_file_name); + GIC.set_resolution_double(resolution); + GIC.set_gain(gain); + GIC.set_cover_from_function(1); + GIC.find_Nerve_simplices(); + 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 graph induced complex + // ---------------------------------------------------------------------------- + + if(verb){ + output_stream << "Nerve is of dimension " << stree.dimension() << + " - " << stree.num_simplices() << " simplices - " << + stree.num_vertices() << " vertices." << std::endl; + + output_stream << "Iterator on Nerve 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; +} |