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Diffstat (limited to 'src/cython/cython/vectors.pyx')
-rw-r--r-- | src/cython/cython/vectors.pyx | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/src/cython/cython/vectors.pyx b/src/cython/cython/vectors.pyx new file mode 100644 index 00000000..42390ae6 --- /dev/null +++ b/src/cython/cython/vectors.pyx @@ -0,0 +1,65 @@ +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) |