1 files changed, 17 insertions, 20 deletions

diff --git a/src/Persistent_cohomology/example/rips_multifield_persistence.cpp b/src/Persistent_cohomology/example/rips_multifield_persistence.cpp
index 9eb5ccfc..2edf5bc4 100644
--- a/src/Persistent_cohomology/example/rips_multifield_persistence.cpp
+++ b/src/Persistent_cohomology/example/rips_multifield_persistence.cpp
@@ -56,11 +56,8 @@ int main(int argc, char * argv[]) {
   Simplex_tree simplex_tree;
 
   rips_complex_from_file.create_complex(simplex_tree, dim_max);
-  std::cout << "The complex contains " << simplex_tree.num_simplices() << " simplices \n";
-  std::cout << "   and has dimension " << simplex_tree.dimension() << " \n";
-
-  // Sort the simplices in the order of the filtration
-  simplex_tree.initialize_filtration();
+  std::clog << "The complex contains " << simplex_tree.num_simplices() << " simplices \n";
+  std::clog << "   and has dimension " << simplex_tree.dimension() << " \n";
 
   // Compute the persistence diagram of the complex
   Persistent_cohomology pcoh(simplex_tree);
@@ -99,7 +96,7 @@ void program_options(int argc, char * argv[]
   visible.add_options()
       ("help,h", "produce help message")
       ("output-file,o", po::value<std::string>(&filediag)->default_value(std::string()),
-       "Name of file in which the persistence diagram is written. Default print in std::cout")
+       "Name of file in which the persistence diagram is written. Default print in std::clog")
       ("max-edge-length,r", po::value<Filtration_value>(&threshold)->default_value(0),
        "Maximal length of an edge for the Rips complex construction.")
       ("cpx-dimension,d", po::value<int>(&dim_max)->default_value(1),
@@ -123,20 +120,20 @@ void program_options(int argc, char * argv[]
   po::notify(vm);
 
   if (vm.count("help") || !vm.count("input-file")) {
-    std::cout << std::endl;
-    std::cout << "Compute the persistent homology with various coefficient fields \n";
-    std::cout << "of a Rips complex defined on a set of input points. The coefficient \n";
-    std::cout << "fields are all the Z/rZ for a prime number r contained in the \n";
-    std::cout << "specified range [p,q]\n \n";
-    std::cout << "The output diagram contains one bar per line, written with the convention: \n";
-    std::cout << "   p1*...*pr   dim b d \n";
-    std::cout << "where dim is the dimension of the homological feature,\n";
-    std::cout << "b and d are respectively the birth and death of the feature and \n";
-    std::cout << "p1*...*pr is the product of prime numbers pi such that the homology \n";
-    std::cout << "feature exists in homology with Z/piZ coefficients." << std::endl << std::endl;
-
-    std::cout << "Usage: " << argv[0] << " [options] input-file" << std::endl << std::endl;
-    std::cout << visible << std::endl;
+    std::clog << std::endl;
+    std::clog << "Compute the persistent homology with various coefficient fields \n";
+    std::clog << "of a Rips complex defined on a set of input points. The coefficient \n";
+    std::clog << "fields are all the Z/rZ for a prime number r contained in the \n";
+    std::clog << "specified range [p,q]\n \n";
+    std::clog << "The output diagram contains one bar per line, written with the convention: \n";
+    std::clog << "   p1*...*pr   dim b d \n";
+    std::clog << "where dim is the dimension of the homological feature,\n";
+    std::clog << "b and d are respectively the birth and death of the feature and \n";
+    std::clog << "p1*...*pr is the product of prime numbers pi such that the homology \n";
+    std::clog << "feature exists in homology with Z/piZ coefficients." << std::endl << std::endl;
+
+    std::clog << "Usage: " << argv[0] << " [options] input-file" << std::endl << std::endl;
+    std::clog << visible << std::endl;
     exit(-1);
   }
 }