CMake modification strategy as it was quite painful to maintain all these utilities

git-svn-id: svn+ssh://scm.gforge.inria.fr/svnroot/gudhi/branches/persistence_representation_integration_cmake_improvement@3062 636b058d-ea47-450e-bf9e-a15bfbe3eedb

Former-commit-id: c0eae764abe5c7076ae59027eeab2a7ad451463c

1 files changed, 5 insertions, 6 deletions

diff --git a/src/Persistence_representations/include/gudhi/Persistence_landscape.h b/src/Persistence_representations/include/gudhi/Persistence_landscape.h
index 5c300112..72498edf 100644
--- a/src/Persistence_representations/include/gudhi/Persistence_landscape.h
+++ b/src/Persistence_representations/include/gudhi/Persistence_landscape.h
@@ -1340,10 +1340,9 @@ void Persistence_landscape::plot(const char* filename, double xRangeBegin, doubl
   // this program create a gnuplot script file that allows to plot persistence diagram.
   std::ofstream out;
 
-  std::ostringstream nameSS;
-  nameSS << filename << "_GnuplotScript";
-  std::string nameStr = nameSS.str();
-  out.open(nameStr);
+  std::ostringstream gnuplot_script;
+  gnuplot_script << filename << "_GnuplotScript";
+  out.open(gnuplot_script.str().c_str());
 
   if ((xRangeBegin != std::numeric_limits<double>::max()) || (xRangeEnd != std::numeric_limits<double>::max()) ||
       (yRangeBegin != std::numeric_limits<double>::max()) || (yRangeEnd != std::numeric_limits<double>::max())) {
@@ -1376,8 +1375,8 @@ void Persistence_landscape::plot(const char* filename, double xRangeBegin, doubl
     }
     out << "EOF" << std::endl;
   }
-  std::cout << "Gnuplot script to visualize persistence diagram written to the file: " << nameStr << ". Type load '"
-            << nameStr << "' in gnuplot to visualize." << std::endl;
+  std::cout << "To visualize, install gnuplot and type the command: gnuplot -persist -e \"load \'"
+            << gnuplot_script.str().c_str() << "\'\"" << std::endl;
 }
 
 }  // namespace Persistence_representations