Typo

git-svn-id: svn+ssh://scm.gforge.inria.fr/svnroot/gudhi/branches/persistence_representation_integration@2472 636b058d-ea47-450e-bf9e-a15bfbe3eedb

Former-commit-id: 457b970258b8a99519db664358c19d0dee80d879

1 files changed, 100 insertions, 0 deletions

diff --git a/src/Persistence_representations/utilities/persistence_intervals/plot_persistence_Betti_numbers.cpp b/src/Persistence_representations/utilities/persistence_intervals/plot_persistence_Betti_numbers.cpp
new file mode 100644
index 00000000..e20f85c0
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+++ b/src/Persistence_representations/utilities/persistence_intervals/plot_persistence_Betti_numbers.cpp
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+/*    This file is part of the Gudhi Library. 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/>.
+ */
+
+
+
+#include <gudhi/reader_utils.h>
+#include <gudhi/Persistence_intervals.h>
+
+#include <iostream>
+
+
+
+using namespace Gudhi;
+using namespace Gudhi::Persistence_representations;
+
+
+int main( int argc , char** argv )
+{
+	std::cout << "This program compute a plot of persistence Betti numbers. The input parameter is a file with persistence intervals. \n";
+	std::cout << "The second optional parameter of a program is the dimension of the persistence that is to be used. If your file contains only birth-death pairs, you can skip this parameter\n";
+	if ( argc < 2 )
+	{
+		std::cout << "To run this program, please provide the name of a file with persistence diagram and number of dominant intervals you would like to get \n";
+		return 1;
+	}
+	unsigned dimension = std::numeric_limits<unsigned>::max();
+	int dim = -1;
+	if ( argc > 2 )
+	{
+		dim = atoi( argv[2] );
+	} 
+	if ( dim >= 0 )
+	{
+		dimension = (unsigned)dim;
+	}
+	
+	
+	std::stringstream gnuplot_script;
+	gnuplot_script << argv[1] << "_Gnuplot_script";
+	std::ofstream out;
+	out.open( gnuplot_script.str().c_str() );
+	
+	Persistence_intervals p( argv[1] , dimension );
+	std::vector< std::pair< double , size_t > > pbns = p.compute_persistent_betti_numbers();	
+	
+	//set up the ranges so that we see the image well.
+	double xRangeBegin = pbns[0].first;
+	double xRangeEnd = pbns[ pbns.size()-1 ].first;
+	double yRangeBegin = 0;
+	double yRangeEnd = 0;
+	for ( size_t i = 0 ; i != pbns.size() ; ++i )
+	{
+		if ( pbns[i].second > yRangeEnd )yRangeEnd = pbns[i].second;
+	}
+	xRangeBegin -= (xRangeEnd -xRangeBegin)/100.0;
+	xRangeEnd += (xRangeEnd -xRangeBegin)/100.0;
+	yRangeEnd += yRangeEnd/100;
+	
+	
+	out << "set xrange [" << xRangeBegin << " : " << xRangeEnd << "]" << std::endl;
+    out << "set yrange [" << yRangeBegin << " : " << yRangeEnd << "]" << std::endl;	
+	out << "plot '-' using 1:2 notitle with lp " << std::endl;    
+	double previous_y = 0;
+	for ( size_t i = 0 ; i != pbns.size() ; ++i )
+	{
+		out << pbns[i].first << " " << previous_y << std::endl;
+		out << pbns[i].first << " " << pbns[i].second << std::endl;
+		previous_y = pbns[i].second;
+	}		
+	out << std::endl;
+	out.close();
+	
+	//for ( size_t i = 0 ; i != pbns.size() ; ++i )
+	//{
+	//	std::cout << pbns[i].first << " " << pbns[i].second << std::endl;
+	//}	
+	
+	std::cout << "To vizualize, open gnuplot and type: load \'" << gnuplot_script.str().c_str() << "\'" << std::endl;
+			
+	return 0;
+}