added betti sequences

git-svn-id: svn+ssh://scm.gforge.inria.fr/svnroot/gudhi/branches/kernels@3431 636b058d-ea47-450e-bf9e-a15bfbe3eedb

Former-commit-id: 4680471ce781468c247c40fb5e6eb699dce890c8

3 files changed, 56 insertions, 2 deletions

diff --git a/src/Persistence_representations/example/CMakeLists.txt b/src/Persistence_representations/example/CMakeLists.txt
index 3142f19b..9be22085 100644
--- a/src/Persistence_representations/example/CMakeLists.txt
+++ b/src/Persistence_representations/example/CMakeLists.txt
@@ -46,3 +46,8 @@ add_executable ( Persistence_landscape_on_grid_exact persistence_landscape_on_gr
 add_test(NAME Persistence_landscape_on_grid_exact
     COMMAND $<TARGET_FILE:Persistence_landscape_on_grid_exact>)
 install(TARGETS Persistence_landscape_on_grid_exact DESTINATION bin)
+
+add_executable ( Betti_sequence betti_sequence.cpp )
+add_test(NAME Betti_sequence
+    COMMAND $<TARGET_FILE:Betti_sequence>)
+install(TARGETS Betti_sequence DESTINATION bin)
diff --git a/src/Persistence_representations/example/betti_sequence.cpp b/src/Persistence_representations/example/betti_sequence.cpp
new file mode 100644
index 00000000..a422a822
--- /dev/null
+++ b/src/Persistence_representations/example/betti_sequence.cpp
@@ -0,0 +1,49 @@
+/*    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):       Mathieu Carriere
+ *
+ *    Copyright (C) 2018  INRIA (France)
+ *
+ *    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/Betti_sequence.h>
+
+#include <iostream>
+#include <vector>
+#include <utility>
+
+using Persistence_diagram = Gudhi::Persistence_representations::Persistence_diagram;
+using BS = Gudhi::Persistence_representations::Betti_sequence;
+
+int main(int argc, char** argv) {
+
+  Persistence_diagram persistence;
+
+  persistence.push_back(std::make_pair(1, 2));
+  persistence.push_back(std::make_pair(6, 8));
+  persistence.push_back(std::make_pair(0, 4));
+  persistence.push_back(std::make_pair(3, 8));
+
+  double min_x = 0; double max_x = 8; int res_x = 1000;
+
+  BS bs(persistence, min_x, max_x, res_x);
+  std::vector<int> B = bs.vectorize();
+
+  for(int i = 0; i < res_x; i++)  std::cout << B[i] << ", ";
+
+  return 0;
+}
diff --git a/src/Persistence_representations/example/persistence_landscape_on_grid_exact.cpp b/src/Persistence_representations/example/persistence_landscape_on_grid_exact.cpp
index da27bc5a..9ce42649 100644
--- a/src/Persistence_representations/example/persistence_landscape_on_grid_exact.cpp
+++ b/src/Persistence_representations/example/persistence_landscape_on_grid_exact.cpp
@@ -38,13 +38,13 @@ int main(int argc, char** argv) {
   persistence.push_back(std::make_pair(0, 4));
   persistence.push_back(std::make_pair(3, 8));
 
-  int nb_ls = 3; double min_x = 0.0; double max_x = 10.0; int res_x = 100;
+  int nb_ls = 2; double min_x = 0; double max_x = 8; int res_x = 1000;
 
   LS ls(persistence, nb_ls, min_x, max_x, res_x);
   std::vector<std::vector<double> > L = ls.vectorize();
 
   for(int i = 0; i < nb_ls; i++){
-    for(int j = 0; j < res_x; j++) std::cout << L[i][j] << " ";
+    for(int j = 0; j < res_x; j++) std::cout << L[i][j] << ", ";
     std::cout << std::endl;
   }