--- a/examples/CMakeLists.txt	Thu Feb 28 11:12:02 2013 +0800
+++ b/examples/CMakeLists.txt	Fri Apr 26 22:31:58 2013 -0700
@@ -1,3 +1,6 @@
+add_executable                  (bottleneck-distance bottleneck-distance.cpp)
+target_link_libraries           (bottleneck-distance ${libraries} ${Boost_PROGRAM_OPTIONS_LIBRARY})
+
 add_subdirectory			(alphashapes)
 #add_subdirectory			(ar-vineyard)
 add_subdirectory			(cech-complex)

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/examples/bottleneck-distance.cpp	Fri Apr 26 22:31:58 2013 -0700
@@ -0,0 +1,67 @@
+#include <utilities/types.h>
+#include <topology/persistence-diagram.h>
+
+#include <string>
+#include <iostream>
+#include <fstream>
+#include <sstream>
+#include <boost/archive/binary_iarchive.hpp>
+#include <boost/serialization/map.hpp>
+
+#include <boost/program_options.hpp>
+
+
+typedef PersistenceDiagram<>                    PDgm;
+
+namespace po = boost::program_options;
+
+
+void read_diagram(PDgm& dgm, const std::string& filename)
+{
+    std::ifstream in(filename.c_str());
+    std::string line;
+    std::getline(in, line);
+    while (in)
+    {
+        std::istringstream sin(line);
+        double x,y;
+        sin >> x >> y;
+        dgm.push_back(PDgm::Point(x,y));
+        std::getline(in, line);
+    }
+}
+
+int main(int argc, char* argv[])
+{
+    std::string     filename1, filename2;
+
+    po::options_description hidden("Hidden options");
+    hidden.add_options()
+        ("input-file1",  po::value<std::string>(&filename1), "The first collection of persistence diagrams")
+        ("input-file2",  po::value<std::string>(&filename2), "The second collection of persistence diagrams");
+
+    po::positional_options_description p;
+    p.add("input-file1", 1);
+    p.add("input-file2", 2);
+
+    po::options_description all; all.add(hidden);
+
+    po::variables_map vm;
+    po::store(po::command_line_parser(argc, argv).
+                  options(all).positional(p).run(), vm);
+    po::notify(vm);
+
+    if (!vm.count("input-file1") || !vm.count("input-file2"))
+    {
+        std::cout << "Usage: " << argv[0] << " input-file1 input-file2" << std::endl;
+        return 1;
+    }
+
+    PDgm dgm1, dgm2;
+    read_diagram(dgm1, filename1);
+    read_diagram(dgm2, filename2);
+    std::cout << "Size dgm1: " << dgm1.size() << std::endl;
+    std::cout << "Size dgm2: " << dgm2.size() << std::endl;
+
+    std::cout << "Distance: " << bottleneck_distance(dgm1, dgm2) << std::endl;
+}