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authorvrouvrea <vrouvrea@636b058d-ea47-450e-bf9e-a15bfbe3eedb>2016-03-29 16:05:12 +0000
committervrouvrea <vrouvrea@636b058d-ea47-450e-bf9e-a15bfbe3eedb>2016-03-29 16:05:12 +0000
commitd1a3b2267b7e638b5d868720cf46987641b22132 (patch)
treeb4d1c36c60e36cb349f5274251199bd94c5f32df /src/Bitmap_cubical_complex/example/Random_bitmap_cubical_complex.cpp
parent04c63ee74520c966451b0cb1713df8b3e9ca5bfb (diff)
Merge VR_bitmap
git-svn-id: svn+ssh://scm.gforge.inria.fr/svnroot/gudhi/branches/bitmap@1074 636b058d-ea47-450e-bf9e-a15bfbe3eedb Former-commit-id: 4c9ac225ffcfb924371c72fccc44cbd6ecb3d6e3
Diffstat (limited to 'src/Bitmap_cubical_complex/example/Random_bitmap_cubical_complex.cpp')
-rw-r--r--src/Bitmap_cubical_complex/example/Random_bitmap_cubical_complex.cpp159
1 files changed, 74 insertions, 85 deletions
diff --git a/src/Bitmap_cubical_complex/example/Random_bitmap_cubical_complex.cpp b/src/Bitmap_cubical_complex/example/Random_bitmap_cubical_complex.cpp
index 8b7f6a04..416ad8f2 100644
--- a/src/Bitmap_cubical_complex/example/Random_bitmap_cubical_complex.cpp
+++ b/src/Bitmap_cubical_complex/example/Random_bitmap_cubical_complex.cpp
@@ -1,94 +1,83 @@
- /* 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
+/* 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
+// standard stuff
#include <iostream>
#include <sstream>
#include <vector>
-using namespace std;
-
-int main( int argc , char** argv )
-{
- srand( time(0) );
-
- cout << "This program computes persistent homology, by using bitmap_cubical_complex class, of cubical complexes. \
-The first parameter of the program is the dimension D of the bitmap. \
-The next D parameters are number of top dimensional cubes in each dimension of the bitmap.\
-The program will create random cubical complex of that sizes and compute persistent homology of it." << endl;
-
- int p = 2;
- double min_persistence = 0;
-
- if ( argc < 3 )
- {
- cerr << "Wrong number of parameters, the program will now terminate\n";
- return 1;
- }
-
- size_t dimensionOfBitmap = (size_t)atoi( argv[1] );
- std::vector< unsigned > sizes;
- size_t multipliers = 1;
- for ( size_t dim = 0 ; dim != dimensionOfBitmap ; ++dim )
- {
- unsigned sizeInThisDimension = (unsigned)atoi( argv[2+dim] );
- sizes.push_back( sizeInThisDimension );
- multipliers *= sizeInThisDimension;
- }
-
- std::vector< double > data;
- for ( size_t i = 0 ; i != multipliers ; ++i )
- {
- data.push_back( rand()/(double)RAND_MAX );
- }
-
- Bitmap_cubical_complex< Bitmap_cubical_complex_base<double> > b( sizes , data );
-
-
-
-
-
- // Compute the persistence diagram of the complex
- persistent_cohomology::Persistent_cohomology< Bitmap_cubical_complex< Bitmap_cubical_complex_base<double> >, Field_Zp > pcoh(b);
- pcoh.init_coefficients( p ); //initilizes the coefficient field for homology
- pcoh.compute_persistent_cohomology( min_persistence );
-
-
- stringstream ss;
- ss << "randomComplex_persistence";
- std::ofstream out(ss.str().c_str());
- pcoh.output_diagram(out);
- out.close();
-
- return 0;
+int main(int argc, char** argv) {
+ srand(time(0));
+
+ std::cout << "This program computes persistent homology, by using bitmap_cubical_complex class, of cubical " <<
+ "complexes. The first parameter of the program is the dimension D of the bitmap. The next D parameters are " <<
+ "number of top dimensional cubes in each dimension of the bitmap. The program will create random cubical " <<
+ "complex of that sizes and compute persistent homology of it." << std::endl;
+
+ int p = 2;
+ double min_persistence = 0;
+
+ if (argc < 3) {
+ std::cerr << "Wrong number of parameters, the program will now terminate\n";
+ return 1;
+ }
+
+ size_t dimensionOfBitmap = (size_t) atoi(argv[1]);
+ std::vector< unsigned > sizes;
+ size_t multipliers = 1;
+ for (size_t dim = 0; dim != dimensionOfBitmap; ++dim) {
+ unsigned sizeInThisDimension = (unsigned) atoi(argv[2 + dim]);
+ sizes.push_back(sizeInThisDimension);
+ multipliers *= sizeInThisDimension;
+ }
+
+ std::vector< double > data;
+ for (size_t i = 0; i != multipliers; ++i) {
+ data.push_back(rand() / static_cast<double>(RAND_MAX));
+ }
+
+ typedef Gudhi::Cubical_complex::Bitmap_cubical_complex_base<double> Bitmap_cubical_complex_base;
+ typedef Gudhi::Cubical_complex::Bitmap_cubical_complex<Bitmap_cubical_complex_base> Bitmap_cubical_complex;
+ Bitmap_cubical_complex b(sizes, data);
+
+ // Compute the persistence diagram of the complex
+ typedef Gudhi::persistent_cohomology::Field_Zp Field_Zp;
+ typedef Gudhi::persistent_cohomology::Persistent_cohomology<Bitmap_cubical_complex, Field_Zp> Persistent_cohomology;
+ Persistent_cohomology pcoh(b);
+ pcoh.init_coefficients(p); // initializes the coefficient field for homology
+ pcoh.compute_persistent_cohomology(min_persistence);
+
+ std::stringstream ss;
+ ss << "randomComplex_persistence";
+ std::ofstream out(ss.str().c_str());
+ pcoh.output_diagram(out);
+ out.close();
+
+ return 0;
}
+