initial preparation to change the name of the package.

git-svn-id: svn+ssh://scm.gforge.inria.fr/svnroot/gudhi/branches/gudhi_stat@2382 636b058d-ea47-450e-bf9e-a15bfbe3eedb

Former-commit-id: 3648a6470eca09c85b60802148cc1e2462b92f79

1 files changed, 65 insertions, 0 deletions

diff --git a/src/Gudhi_stat/include/gudhi/Persistence_intervals_with_distances.h b/src/Gudhi_stat/include/gudhi/Persistence_intervals_with_distances.h
new file mode 100644
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--- /dev/null
+++ b/src/Gudhi_stat/include/gudhi/Persistence_intervals_with_distances.h
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+/*    This file is part of the Gudhi hiLibrary. The Gudhi library
+ *    (Geometric Understanding in Higher Dimensions) is a generic C++
+ *    library for computational topology.
+ *
+ *    Author(s):       Pawel Dlotko
+ *
+ *    Copyright (C) 2015  INRIA (France)
+ *
+ *    This program is free software: you can redistribute it and/or modify
+ *    it under the terms of the GNU General Public License as published by
+ *    the Free Software Foundation, either version 3 of the License, or
+ *    (at your option) any later version.
+ *
+ *    This program is distributed in the hope that it will be useful,
+ *    but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *    GNU General Public License for more details.
+ *
+ *    You should have received a copy of the GNU General Public License
+ *    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef Persistence_intervals_WITH_DISTANCES_H_
+#define Persistence_intervals_WITH_DISTANCES_H_
+
+
+#include <gudhi/persistence_representations/Persistence_intervals.h>
+#include <gudhi/Bottleneck.h>
+
+namespace Gudhi 
+{
+namespace Persistence_representations 
+{
+
+class Persistence_intervals_with_distances : public Persistence_intervals
+{
+public:
+	using Persistence_intervals::Persistence_intervals;
+
+    /**
+     *Computations of distance from the current persistnce diagram to the persistence diagram given as a parameter of this function.
+     *The last but one parameter, power, is here in case we would like to compute p=th Wasserstein distance. At the moment, this method only implement Bottleneck distance,
+     * which is infinity Wasserstein distance. Therefore any power which is not the default std::numeric_limits< double >::max() will be ignored and an
+     * exception will be thrown.
+     * The last parameter, tolerance, it is an additiv error of the approimation, set by default to zero.
+    **/
+     double distance( const Persistence_intervals_with_distances& second , double power = std::numeric_limits< double >::max() , double tolerance = 0) const
+    {
+		if ( power >= std::numeric_limits< double >::max() )
+		{
+			return Gudhi::persistence_diagram::bottleneck_distance(this->intervals, second.intervals, tolerance);			
+		}
+		else
+		{
+			std::cerr << "At the moment Gudhi do not support Wasserstein distances. We only support Bottleneck distance." << std::endl;
+			throw "At the moment Gudhi do not support Wasserstein distances. We only support Bottleneck distance.";
+		}
+	}
+};
+
+
+}//namespace gudhi stat
+}//namespace gudhi
+
+#endif