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+from cython cimport numeric
+from libcpp.vector cimport vector
+from libcpp.utility cimport pair
+import os
+
+"""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/>.
+"""
+
+__author__ = "Mathieu Carriere"
+__copyright__ = "Copyright (C) 2018 INRIA"
+__license__ = "GPL v3"
+
+cdef extern from "Vectors_interface.h" namespace "Gudhi::persistence_diagram":
+ vector[vector[double]] compute_ls (vector[pair[double, double]], int, double, double, int)
+ vector[vector[double]] compute_pim (vector[pair[double, double]], double, double, int, double, double, int, string, double, double, double)
+
+def landscape(diagram, nb_ls = 10, min_x = 0.0, max_x = 1.0, res_x = 100):
+ """
+
+ :param diagram: The diagram
+ :type diagram: vector[pair[double, double]]
+ :param nb_ls: Number of landscapes
+ :param min_x: Minimum abscissa
+ :param max_x: Maximum abscissa
+ :param res_x: Number of samples
+
+ :returns: the landscape
+ """
+ return compute_ls(diagram, nb_ls, min_x, max_x, res_x)
+
+def persistence_image(diagram, min_x = 0.0, max_x = 1.0, res_x = 10, min_y = 0.0, max_y = 1.0, res_y = 10, weight = "linear", sigma = 1.0, C = 1.0, p = 1.0):
+ """
+
+ :param diagram: The diagram
+ :type diagram: vector[vector[pair[double, double]]]
+ :param min_x: Minimum abscissa
+ :param max_x: Maximum abscissa
+ :param res_x: Number of abscissa pixels
+ :param min_x: Minimum ordinate
+ :param max_x: Maximum ordinate
+ :param res_x: Number of ordinate pixels
+ :param sigma: bandwidth of Gaussian
+
+ :returns: the persistence image
+ """
+ return compute_pim(diagram, min_x, max_x, res_x, min_y, max_y, res_y, weight, sigma, C, p)