Merge last trunk modifications

git-svn-id: svn+ssh://scm.gforge.inria.fr/svnroot/gudhi/branches/alpha_complex_create_complex@1715 636b058d-ea47-450e-bf9e-a15bfbe3eedb

Former-commit-id: 68b171b536522a45c4304e40bafe11d08c8921dd

1 files changed, 27 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..b35a18d9
--- /dev/null
+++ b/src/Subsampling/example/example_sparsify_point_set.cpp
@@ -0,0 +1,27 @@
+#include <gudhi/sparsify_point_set.h>
+
+#include <CGAL/Epick_d.h>
+#include <CGAL/Random.h>
+
+#include <vector>
+#include <iterator>
+
+int main(void) {
+  typedef CGAL::Epick_d<CGAL::Dimension_tag<4> > K;
+  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(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;
+}