Add warnings for rips persistence from correlation matrix (points under the diagonal).

Use range instead of vector in write_persistence_intervals_to_stream


git-svn-id: svn+ssh://scm.gforge.inria.fr/svnroot/gudhi/branches/rips_complex_from_correlation_matrix@3326 636b058d-ea47-450e-bf9e-a15bfbe3eedb

Former-commit-id: ea0fdc32c91f1927c5a9f2a3864360895ce8128a

2 files changed, 10 insertions, 0 deletions

diff --git a/src/cython/doc/rips_complex_user.rst b/src/cython/doc/rips_complex_user.rst
index b80ff7fe..7738aef0 100644
--- a/src/cython/doc/rips_complex_user.rst
+++ b/src/cython/doc/rips_complex_user.rst
@@ -305,3 +305,8 @@ until dimension 1 - one skeleton graph in other words), the output is:
     [2, 4] -> 0.97
     [0, 3] -> 0.99
     [1, 3] -> 0.99
+
+.. note::
+    As persistence diagrams points will be under the diagonal,
+    bottleneck distance and persistence graphical tool will not work properly,
+    this is a known issue.
diff --git a/src/cython/example/rips_complex_diagram_persistence_from_correlation_matrix_file_example.py b/src/cython/example/rips_complex_diagram_persistence_from_correlation_matrix_file_example.py
index ad990fdc..aa82ef71 100755
--- a/src/cython/example/rips_complex_diagram_persistence_from_correlation_matrix_file_example.py
+++ b/src/cython/example/rips_complex_diagram_persistence_from_correlation_matrix_file_example.py
@@ -50,6 +50,11 @@ if not (-1. < args.min_edge_correlation < 1.):
     sys.exit(1)
 
 print("#####################################################################")
+print("Caution: as persistence diagrams points will be under the diagonal,")
+print("bottleneck distance and persistence graphical tool will not work")
+print("properly, this is a known issue.")
+
+print("#####################################################################")
 print("RipsComplex creation from correlation matrix read in a csv file")
 
 message = "RipsComplex with min_edge_correlation=" + repr(args.min_edge_correlation)