diff options
author | skachano <skachano@636b058d-ea47-450e-bf9e-a15bfbe3eedb> | 2016-06-24 13:42:39 +0000 |
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committer | skachano <skachano@636b058d-ea47-450e-bf9e-a15bfbe3eedb> | 2016-06-24 13:42:39 +0000 |
commit | 7928209595af6f7559fde36fa06c031cd47e7179 (patch) | |
tree | 5797f3cf082db94827ef0fa17ceeb2c50712c4f5 /src/Subsampling/example | |
parent | 9eaa65136751ab3362c13455163187bd60e7a1aa (diff) |
Copied Clément's example for 2 functions
git-svn-id: svn+ssh://scm.gforge.inria.fr/svnroot/gudhi/branches/subsampling_and_spatialsearching@1338 636b058d-ea47-450e-bf9e-a15bfbe3eedb
Former-commit-id: 42f29038057980965bfead2c73cbc013448493fb
Diffstat (limited to 'src/Subsampling/example')
-rw-r--r-- | src/Subsampling/example/CMakeLists.txt | 4 | ||||
-rw-r--r-- | src/Subsampling/example/example_choose_by_farthest_point.cpp | 52 | ||||
-rw-r--r-- | src/Subsampling/example/example_pick_random_points.cpp | 52 |
3 files changed, 106 insertions, 2 deletions
diff --git a/src/Subsampling/example/CMakeLists.txt b/src/Subsampling/example/CMakeLists.txt index e7a8a9f7..e1e7cc71 100644 --- a/src/Subsampling/example/CMakeLists.txt +++ b/src/Subsampling/example/CMakeLists.txt @@ -11,9 +11,9 @@ if(CGAL_FOUND) include( ${EIGEN3_USE_FILE} ) include_directories (BEFORE "../../include") - #add_executable( Subsampling_example_pick_random_points example_pick_random_points.cpp ) + add_executable( Subsampling_example_pick_random_points example_pick_random_points.cpp ) - #add_executable( Subsampling_example_choose_farthest_point example_choose_farthest_point.cpp ) + add_executable( Subsampling_example_choose_by_farthest_point example_choose_by_farthest_point.cpp ) #target_link_libraries(Subsampling_example_choose_farthest_point ${Boost_SYSTEM_LIBRARY} ${Boost_UNIT_TEST_FRAMEWORK_LIBRARY}) add_executable(Subsampling_example_sparsify_point_set example_sparsify_point_set.cpp) diff --git a/src/Subsampling/example/example_choose_by_farthest_point.cpp b/src/Subsampling/example/example_choose_by_farthest_point.cpp new file mode 100644 index 00000000..5b81bc9d --- /dev/null +++ b/src/Subsampling/example/example_choose_by_farthest_point.cpp @@ -0,0 +1,52 @@ +/* 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): Siargey Kachanovich + * + * 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/choose_by_farthest_point.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::choose_by_farthest_point(k, points, 100, std::back_inserter(results)); + std::cout << "Before sparsification: " << points.size() << " points.\n"; + std::cout << "After sparsification: " << results.size() << " points.\n"; + + return 0; +} diff --git a/src/Subsampling/example/example_pick_random_points.cpp b/src/Subsampling/example/example_pick_random_points.cpp new file mode 100644 index 00000000..49a027a4 --- /dev/null +++ b/src/Subsampling/example/example_pick_random_points.cpp @@ -0,0 +1,52 @@ +/* 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): Siargey Kachanovich + * + * 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/pick_random_points.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::pick_random_points(points, 100, std::back_inserter(results)); + std::cout << "Before sparsification: " << points.size() << " points.\n"; + std::cout << "After sparsification: " << results.size() << " points.\n"; + + return 0; +} |