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Diffstat (limited to 'src/python/example/rips_complex_diagram_persistence_from_distance_matrix_file_example.py')
-rwxr-xr-x | src/python/example/rips_complex_diagram_persistence_from_distance_matrix_file_example.py | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/src/python/example/rips_complex_diagram_persistence_from_distance_matrix_file_example.py b/src/python/example/rips_complex_diagram_persistence_from_distance_matrix_file_example.py new file mode 100755 index 00000000..0b9a9ba9 --- /dev/null +++ b/src/python/example/rips_complex_diagram_persistence_from_distance_matrix_file_example.py @@ -0,0 +1,63 @@ +#!/usr/bin/env python + +import gudhi +import argparse + +""" 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): Vincent Rouvreau + + Copyright (C) 2016 Inria + + Modification(s): + - YYYY/MM Author: Description of the modification +""" + +__author__ = "Vincent Rouvreau" +__copyright__ = "Copyright (C) 2016 Inria" +__license__ = "MIT" + +parser = argparse.ArgumentParser( + description="RipsComplex creation from " "a distance matrix read in a csv file.", + epilog="Example: " + "example/rips_complex_diagram_persistence_from_distance_matrix_file_example.py " + "-f ../data/distance_matrix/lower_triangular_distance_matrix.csv -e 12.0 -d 3" + "- Constructs a Rips complex with the " + "distance matrix from the given csv file.", +) +parser.add_argument("-f", "--file", type=str, required=True) +parser.add_argument("-e", "--max_edge_length", type=float, default=0.5) +parser.add_argument("-d", "--max_dimension", type=int, default=1) +parser.add_argument("-b", "--band", type=float, default=0.0) +parser.add_argument( + "--no-diagram", + default=False, + action="store_true", + help="Flag for not to display the diagrams", +) + +args = parser.parse_args() + +print("#####################################################################") +print("RipsComplex creation from distance matrix read in a csv file") + +message = "RipsComplex with max_edge_length=" + repr(args.max_edge_length) +print(message) + +distance_matrix = gudhi.read_lower_triangular_matrix_from_csv_file(csv_file=args.file) +rips_complex = gudhi.RipsComplex( + distance_matrix=distance_matrix, max_edge_length=args.max_edge_length +) +simplex_tree = rips_complex.create_simplex_tree(max_dimension=args.max_dimension) + +message = "Number of simplices=" + repr(simplex_tree.num_simplices()) +print(message) + +diag = simplex_tree.persistence() + +print("betti_numbers()=") +print(simplex_tree.betti_numbers()) + +if args.no_diagram == False: + pplot = gudhi.plot_persistence_diagram(diag, band=args.band) + pplot.show() |