Added an example with nearest landmark table. It is buggy.

git-svn-id: svn+ssh://scm.gforge.inria.fr/svnroot/gudhi/branches/relaxed-witness@1966 636b058d-ea47-450e-bf9e-a15bfbe3eedb

Former-commit-id: 63ec7e948686d1f8c43576bab5a892ad816ffed4

2 files changed, 53 insertions, 0 deletions

diff --git a/src/Witness_complex/example/CMakeLists.txt b/src/Witness_complex/example/CMakeLists.txt
index 848239b5..2bae07d9 100644
--- a/src/Witness_complex/example/CMakeLists.txt
+++ b/src/Witness_complex/example/CMakeLists.txt
@@ -13,9 +13,12 @@ if(CGAL_FOUND)
 
       add_executable ( Witness_complex_example_strong_witness_persistence example_strong_witness_persistence.cpp )
       target_link_libraries(Witness_complex_example_strong_witness_persistence ${Boost_PROGRAM_OPTIONS_LIBRARY})
+
+      add_executable ( Witness_complex_example_nearest_landmark_table example_nearest_landmark_table.cpp )
       if (TBB_FOUND)
         target_link_libraries(Witness_complex_example_witness_persistence ${TBB_LIBRARIES})
         target_link_libraries(Witness_complex_example_strong_witness_persistence ${TBB_LIBRARIES})
+        target_link_libraries(Witness_complex_example_nearest_landmark_table ${TBB_LIBRARIES})
       endif()
 
       add_test(Witness_complex_test_torus_persistence
diff --git a/src/Witness_complex/example/example_nearest_landmark_table.cpp b/src/Witness_complex/example/example_nearest_landmark_table.cpp
new file mode 100644
index 00000000..00ec17e0
--- /dev/null
+++ b/src/Witness_complex/example/example_nearest_landmark_table.cpp
@@ -0,0 +1,50 @@
+#define BOOST_PARAMETER_MAX_ARITY 12
+
+
+#include <sys/types.h>
+#include <sys/stat.h>
+
+#include <gudhi/Simplex_tree.h>
+#include <gudhi/Witness_complex.h>
+#include <gudhi/reader_utils.h>
+#include <gudhi/Persistent_cohomology.h>
+
+#include <CGAL/Epick_d.h>
+
+#include <iostream>
+#include <fstream>
+#include <ctime>
+#include <utility>
+#include <string>
+#include <vector>
+
+int main(int argc, char * const argv[]) {
+  typedef std::vector<std::pair<std::size_t, double>>                     Nearest_landmark_range;
+  typedef std::vector<Nearest_landmark_range>                             Nearest_landmark_table;
+  typedef Gudhi::witness_complex::Witness_complex<Nearest_landmark_table> Witness_complex;
+  
+  Gudhi::Simplex_tree<> simplex_tree;
+  Nearest_landmark_table nlt;
+
+  // Example contains 10 witnesses and 5 landmarks
+  Nearest_landmark_range w0 = {std::make_pair(0,0), std::make_pair(1,1), std::make_pair(2,2), std::make_pair(3,3), std::make_pair(4,4)}; nlt.push_back(w0);
+  Nearest_landmark_range w1 = {std::make_pair(1,0), std::make_pair(2,1), std::make_pair(3,2), std::make_pair(4,3), std::make_pair(0,4)}; nlt.push_back(w1);
+  Nearest_landmark_range w2 = {std::make_pair(2,0), std::make_pair(3,1), std::make_pair(4,2), std::make_pair(0,3), std::make_pair(1,4)}; nlt.push_back(w2);
+  Nearest_landmark_range w3 = {std::make_pair(3,0), std::make_pair(4,1), std::make_pair(0,2), std::make_pair(1,3), std::make_pair(2,4)}; nlt.push_back(w3);
+  Nearest_landmark_range w4 = {std::make_pair(4,0), std::make_pair(0,1), std::make_pair(1,2), std::make_pair(2,3), std::make_pair(3,4)}; nlt.push_back(w4);
+  Nearest_landmark_range x0 = {std::make_pair(0,0), std::make_pair(4,1), std::make_pair(3,2), std::make_pair(2,3), std::make_pair(1,4)}; nlt.push_back(x0);
+  Nearest_landmark_range x1 = {std::make_pair(1,0), std::make_pair(0,1), std::make_pair(4,2), std::make_pair(3,3), std::make_pair(2,4)}; nlt.push_back(x1);
+  Nearest_landmark_range x2 = {std::make_pair(2,0), std::make_pair(1,1), std::make_pair(0,2), std::make_pair(4,3), std::make_pair(3,4)}; nlt.push_back(x2);
+  Nearest_landmark_range x3 = {std::make_pair(3,0), std::make_pair(2,1), std::make_pair(1,2), std::make_pair(0,3), std::make_pair(4,4)}; nlt.push_back(x3);
+  Nearest_landmark_range x4 = {std::make_pair(4,0), std::make_pair(3,1), std::make_pair(2,2), std::make_pair(1,3), std::make_pair(0,4)}; nlt.push_back(x4);
+
+  Witness_complex witness_complex(nlt);
+  witness_complex.create_complex(simplex_tree, 4.1);
+
+  Gudhi::persistent_cohomology::Persistent_cohomology<Gudhi::Simplex_tree<>, Gudhi::persistent_cohomology::Field_Zp > pcoh(simplex_tree);
+  // initializes the coefficient field for homology
+  pcoh.init_coefficients(11);
+
+  pcoh.compute_persistent_cohomology(-0.1);
+  pcoh.output_diagram();
+}