diff options
Diffstat (limited to 'src/Persistence_representations/example/persistence_vectors.cpp')
-rw-r--r-- | src/Persistence_representations/example/persistence_vectors.cpp | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/src/Persistence_representations/example/persistence_vectors.cpp b/src/Persistence_representations/example/persistence_vectors.cpp new file mode 100644 index 00000000..b27e52d2 --- /dev/null +++ b/src/Persistence_representations/example/persistence_vectors.cpp @@ -0,0 +1,62 @@ +/* This file is part of the Gudhi Library - https://gudhi.inria.fr/ - which is released under MIT. + * See file LICENSE or go to https://gudhi.inria.fr/licensing/ for full license details. + * Author(s): Pawel Dlotko + * + * Copyright (C) 2016 Inria + * + * Modification(s): + * - YYYY/MM Author: Description of the modification + */ + +#include <gudhi/Persistence_vectors.h> + +#include <iostream> +#include <vector> +#include <cmath> +#include <iomanip> +#include <limits> +#include <utility> + +using Vector_distances_in_diagram = + Gudhi::Persistence_representations::Vector_distances_in_diagram<Gudhi::Euclidean_distance>; + +int main(int argc, char** argv) { + // create two simple vectors with birth--death pairs: + + std::vector<std::pair<double, double> > persistence1; + std::vector<std::pair<double, double> > persistence2; + + persistence1.push_back(std::make_pair(1, 2)); + persistence1.push_back(std::make_pair(6, 8)); + persistence1.push_back(std::make_pair(0, 4)); + persistence1.push_back(std::make_pair(3, 8)); + + persistence2.push_back(std::make_pair(2, 9)); + persistence2.push_back(std::make_pair(1, 6)); + persistence2.push_back(std::make_pair(3, 5)); + persistence2.push_back(std::make_pair(6, 10)); + + // create two persistence vectors based on persistence1 and persistence2: + Vector_distances_in_diagram v1(persistence1, std::numeric_limits<size_t>::max()); + Vector_distances_in_diagram v2(persistence2, std::numeric_limits<size_t>::max()); + + // writing to a stream: + std::cout << "v1 : " << v1 << std::endl; + std::cout << "v2 : " << v2 << std::endl; + + // averages: + Vector_distances_in_diagram average; + average.compute_average({&v1, &v2}); + std::cout << "Average : " << average << std::endl; + + // computations of distances: + std::cout << "l^1 distance : " << v1.distance(v2) << std::endl; + + // computations of scalar product: + std::cout << "Scalar product of l1 and l2 : " << v1.compute_scalar_product(v2) << std::endl; + + // create a file with a gnuplot script: + v1.plot("plot_of_vector_representation"); + + return 0; +} |