git-svn-id: svn+ssh://scm.gforge.inria.fr/svnroot/gudhi/branches/kernels@3386 636b058d-ea47-450e-bf9e-a15bfbe3eedb

Former-commit-id: 29ea554ecd104927cce84dbc21dab531fc21265c

1 files changed, 59 insertions, 0 deletions

diff --git a/src/cython/include/Vectors_interface.h b/src/cython/include/Vectors_interface.h
new file mode 100644
index 00000000..49d28e7c
--- /dev/null
+++ b/src/cython/include/Vectors_interface.h
@@ -0,0 +1,59 @@
+/*    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):       Mathieu Carriere
+ *
+ *    Copyright (C) 2018 INRIA
+ *
+ *    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 INCLUDE_VECTORS_INTERFACE_H_
+#define INCLUDE_VECTORS_INTERFACE_H_
+
+#include <gudhi/Landscape.h>
+#include <gudhi/Persistence_image.h>
+#include <gudhi/Persistence_weighted_gaussian.h>
+
+#include <iostream>
+#include <vector>
+#include <utility>  // for std::pair
+
+using Weight = std::function<double (std::pair<double,double>) >;
+
+namespace Gudhi {
+
+namespace persistence_diagram {
+
+  std::vector<std::vector<double> > compute_ls(const std::vector<std::pair<double, double> >& diag, int nb_ls, double min_x, double max_x, int res_x) {
+    Gudhi::Persistence_representations::Landscape L(diag, nb_ls, min_x, max_x, res_x);
+    return L.vectorize();
+  }
+
+  std::vector<std::vector<double> > compute_pim(const std::vector<std::pair<double, double> >& diag, double min_x, double max_x, int res_x, double min_y, double max_y, int res_y, std::string weight, double sigma, double C, double p) {
+    Weight weight_fn;
+    if(weight.compare("linear") == 0)  weight_fn = Gudhi::Persistence_representations::Persistence_weighted_gaussian::linear_weight;
+    if(weight.compare("arctan") == 0)  weight_fn = Gudhi::Persistence_representations::Persistence_weighted_gaussian::arctan_weight(C,p);
+    if(weight.compare("const")  == 0)  weight_fn = Gudhi::Persistence_representations::Persistence_weighted_gaussian::const_weight;
+    Gudhi::Persistence_representations::Persistence_image P(diag, min_x, max_x, res_x, min_y, max_y, res_y, weight_fn, sigma);
+    return P.vectorize();
+  }
+
+}  // namespace persistence_diagram
+
+}  // namespace Gudhi
+
+
+#endif  // INCLUDE_VECTORS_INTERFACE_H_