diff options
author | cjamin <cjamin@636b058d-ea47-450e-bf9e-a15bfbe3eedb> | 2016-06-24 12:23:40 +0000 |
---|---|---|
committer | cjamin <cjamin@636b058d-ea47-450e-bf9e-a15bfbe3eedb> | 2016-06-24 12:23:40 +0000 |
commit | 8e78adfc0f09f128a541cb96dad7a547dd6a9d0c (patch) | |
tree | 74e844ba7217af91e0dc42a2263076a0173731df /src/Subsampling/example/example_sparsify_point_set.cpp | |
parent | c90bcb4438cd23467ece39eb9815fe66cee04740 (diff) |
Add an example
git-svn-id: svn+ssh://scm.gforge.inria.fr/svnroot/gudhi/branches/subsampling_and_spatialsearching@1334 636b058d-ea47-450e-bf9e-a15bfbe3eedb
Former-commit-id: df8ee96b7cbfcc4380e49956b2495ec8bf12895e
Diffstat (limited to 'src/Subsampling/example/example_sparsify_point_set.cpp')
-rw-r--r-- | src/Subsampling/example/example_sparsify_point_set.cpp | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/src/Subsampling/example/example_sparsify_point_set.cpp b/src/Subsampling/example/example_sparsify_point_set.cpp new file mode 100644 index 00000000..57171082 --- /dev/null +++ b/src/Subsampling/example/example_sparsify_point_set.cpp @@ -0,0 +1,51 @@ +/* This file is part of the Gudhi Library. The Gudhi library + * (Geometric Understanding in Higher Dimensions) is a generic C++ + * library for computational topology. + * + * Author(s): Clement Jamin + * + * Copyright (C) 2016 INRIA + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <gudhi/sparsify_point_set.h> + +#include <CGAL/Epick_d.h> +#include <CGAL/Random.h> + +#include <array> +#include <vector> +#include <iterator> + +int main (void) +{ + typedef CGAL::Epick_d<CGAL::Dimension_tag<4> > K; + typedef typename K::FT FT; + typedef typename K::Point_d Point_d; + + CGAL::Random rd; + + std::vector<Point_d> points; + for (int i = 0 ; i < 500 ; ++i) + points.push_back(Point_d(std::array<FT,4>({rd.get_double(-1.,1),rd.get_double(-1.,1),rd.get_double(-1.,1),rd.get_double(-1.,1)}))); + + K k; + std::vector<Point_d> results; + Gudhi::subsampling::sparsify_point_set(k, points, 0.4, std::back_inserter(results)); + std::cout << "Before sparsification: " << points.size() << " points.\n"; + std::cout << "After sparsification: " << results.size() << " points.\n"; + + return 0; +} |