1 files changed, 3 insertions, 3 deletions
diff --git a/src/Persistence_representations/utilities/persistence_heat_maps/create_persistence_heat_maps.cpp b/src/Persistence_representations/utilities/persistence_heat_maps/create_persistence_heat_maps.cpp
index 29170c32..ca27f8e3 100644
--- a/src/Persistence_representations/utilities/persistence_heat_maps/create_persistence_heat_maps.cpp
+++ b/src/Persistence_representations/utilities/persistence_heat_maps/create_persistence_heat_maps.cpp
@@ -19,7 +19,7 @@ using constant_scaling_function = Gudhi::Persistence_representations::constant_s
 using Persistence_heat_maps = Gudhi::Persistence_representations::Persistence_heat_maps<constant_scaling_function>;
 
 int main(int argc, char** argv) {
-  std::cout << "This program creates persistence heat map files (*.mps) of persistence diagrams files (*.pers) "
+  std::clog << "This program creates persistence heat map files (*.mps) of persistence diagrams files (*.pers) "
             << "provided as an input.\n"
             << "The first parameter of a program is an integer, a size of a grid.\n"
             << "The second and third parameters are min and max of the grid. If you want those numbers to be computed "
@@ -35,7 +35,7 @@ int main(int argc, char** argv) {
             << "The remaining parameters are the names of files with persistence diagrams. \n";
 
   if (argc < 7) {
-    std::cout << "Wrong parameter list, the program will now terminate \n";
+    std::clog << "Wrong parameter list, the program will now terminate \n";
     return 1;
   }
   size_t size_of_grid = (size_t)atoi(argv[1]);
@@ -55,7 +55,7 @@ int main(int argc, char** argv) {
 
   std::vector<std::vector<double> > filter = Gudhi::Persistence_representations::create_Gaussian_filter(stdiv, 1);
   for (size_t i = 0; i != filenames.size(); ++i) {
-    std::cout << "Creating a heat map based on file : " << filenames[i] << std::endl;
+    std::clog << "Creating a heat map based on file : " << filenames[i] << std::endl;
     Persistence_heat_maps l(filenames[i], filter, false, size_of_grid, min_, max_, dimension);
 
     std::stringstream ss;