diff options
Diffstat (limited to 'src/Bitmap_cubical_complex/example/Bitmap_cubical_complex.cpp')
-rw-r--r-- | src/Bitmap_cubical_complex/example/Bitmap_cubical_complex.cpp | 146 |
1 files changed, 73 insertions, 73 deletions
diff --git a/src/Bitmap_cubical_complex/example/Bitmap_cubical_complex.cpp b/src/Bitmap_cubical_complex/example/Bitmap_cubical_complex.cpp index e56428b6..ed141ed9 100644 --- a/src/Bitmap_cubical_complex/example/Bitmap_cubical_complex.cpp +++ b/src/Bitmap_cubical_complex/example/Bitmap_cubical_complex.cpp @@ -1,73 +1,73 @@ - /* 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 Saclay (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/>. - */ - - -//for persistence algorithm -#include <gudhi/reader_utils.h> -#include <gudhi/Bitmap_cubical_complex.h> -#include <gudhi/Persistent_cohomology.h> - - -using namespace Gudhi; -using namespace Gudhi::Cubical_complex; -using namespace Gudhi::persistent_cohomology; - -//standard stuff -#include <iostream> -#include <sstream> - -using namespace std; - -int main( int argc , char** argv ) -{ - cout << "This program computes persistent homology, by using bitmap_cubical_complex class,\ - of cubical complexes provided in text files in Perseus style (the only numbered in \ -the first line is a dimension D of a bitmap. In the lines I between 2 and D+1 there are\ - numbers of top dimensional cells in the direction I. Let N denote product \ -of the numbers in the lines between 2 and D. In the lines D+2 to D+2+N there are\ - filtrations of top dimensional cells. We assume that the cells are in the \ -lexicographical order. See CubicalOneSphere.txt or CubicalTwoSphere.txt for example." << endl; - - int p = 2; - double min_persistence = 0; - - if ( argc != 2 ) - { - cout << "Wrong number of parameters. Please provide the name of a file with a\ - Perseus style bitmap at the input. The program will now terminate.\n"; - return 1; - } - - Bitmap_cubical_complex<double> b( argv[1] ); - - // Compute the persistence diagram of the complex - persistent_cohomology::Persistent_cohomology< Bitmap_cubical_complex<double>, Field_Zp > pcoh(b); - pcoh.init_coefficients( p ); //initilizes the coefficient field for homology - pcoh.compute_persistent_cohomology( min_persistence ); - stringstream ss; - ss << argv[1] << "_persistence"; - std::ofstream out(ss.str().c_str()); - pcoh.output_diagram(out); - out.close(); - - return 0; -} + /* 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 Saclay (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/Bitmap_cubical_complex.h>
+#include <gudhi/Persistent_cohomology.h>
+
+
+using namespace Gudhi;
+using namespace Gudhi::Cubical_complex;
+using namespace Gudhi::persistent_cohomology;
+
+//standard stuff
+#include <iostream>
+#include <sstream>
+#include <vector>
+
+using namespace std;
+
+
+int main( int argc , char** argv )
+{
+ cout << "This program computes persistent homology, by using bitmap_cubical_complex class, of cubical complexes provided in text files in Perseus style (the only numbered in \
+the first line is a dimension D of a bitmap. In the lines I between 2 and D+1 there are numbers of top dimensional cells in the direction I. Let N denote product \
+of the numbers in the lines between 2 and D. In the lines D+2 to D+2+N there are filtrations of top dimensional cells. We assume that the cells are in the \
+lexicographical order. See CubicalOneSphere.txt or CubicalTwoSphere.txt for example." << endl;
+
+ int p = 2;
+ double min_persistence = 0;
+
+ if ( argc != 2 )
+ {
+ cout << "Wrong number of parameters. Please provide the name of a file with a Perseus style bitmap at the input. The program will now terminate.\n";
+ return 1;
+ }
+
+ Bitmap_cubical_complex<double> b( argv[1] );
+
+
+ // Compute the persistence diagram of the complex
+ persistent_cohomology::Persistent_cohomology< Bitmap_cubical_complex<double>, Field_Zp > pcoh(b);
+ pcoh.init_coefficients( p ); //initilizes the coefficient field for homology
+ pcoh.compute_persistent_cohomology( min_persistence );
+
+
+ stringstream ss;
+ ss << argv[1] << "_persistence";
+ std::ofstream out((char*)ss.str().c_str());
+ pcoh.output_diagram(out);
+ out.close();
+
+ return 0;
+}
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