1 files changed, 52 insertions, 0 deletions
diff --git a/src/python/example/alpha_complex_from_generated_points_example.py b/src/python/example/alpha_complex_from_generated_points_example.py
new file mode 100644
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+++ b/src/python/example/alpha_complex_from_generated_points_example.py
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+#!/usr/bin/env python
+
+from gudhi import random_point_generators
+from gudhi import AlphaComplex, SimplexTree
+from gudhi import plot_persistence_barcode, plot_persistence_diagram
+
+import matplotlib.pyplot as plt
+
+
+""" 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):       Hind Montassif
+
+    Copyright (C) 2021 Inria
+
+    Modification(s):
+      - YYYY/MM Author: Description of the modification
+"""
+
+__author__ = "Hind Montassif"
+__copyright__ = "Copyright (C) 2021 Inria"
+__license__ = "MIT"
+
+print("#####################################################################")
+print("AlphaComplex creation from generated points")
+
+
+# Generate a circle: 50 points; dim 2; radius 1
+points = random_point_generators.generate_points_on_sphere_d(50, 2, 1)
+
+# Plot the generated points (to uncomment if wished)
+#plt.scatter(points[:,0], points[:,1])
+#plt.show()
+
+# Create an alpha complex
+alpha_complex = AlphaComplex(points=points)
+simplex_tree = alpha_complex.create_simplex_tree()
+
+result_str = 'Alpha complex is of dimension ' + repr(simplex_tree.dimension()) + ' - ' + \
+    repr(simplex_tree.num_simplices()) + ' simplices - ' + \
+    repr(simplex_tree.num_vertices()) + ' vertices.'
+print(result_str)
+
+
+# Compute the persistence
+diag = simplex_tree.persistence()
+
+# Plot the barcode and diagram (to uncomment if wished)
+#plot_persistence_barcode(diag)
+#plt.show()
+#plot_persistence_diagram(diag)
+#plt.show()