1 files changed, 79 insertions, 0 deletions
diff --git a/src/Persistence_representations/utilities/persistence_landscapes_on_grid/create_landscapes_on_grid.cpp b/src/Persistence_representations/utilities/persistence_landscapes_on_grid/create_landscapes_on_grid.cpp
new file mode 100644
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--- /dev/null
+++ b/src/Persistence_representations/utilities/persistence_landscapes_on_grid/create_landscapes_on_grid.cpp
@@ -0,0 +1,79 @@
+/*    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) 2016  INRIA (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/Persistence_landscape_on_grid.h>
+
+#include <iostream>
+#include <sstream>
+#include <limits>
+#include <vector>
+
+using Persistence_landscape_on_grid = Gudhi::Persistence_representations::Persistence_landscape_on_grid;
+
+int main(int argc, char** argv) {
+  std::cout << "This program creates persistence landscape on grid of diagrams provided as an input.\n";
+  std::cout << "The first parameter of a program is an integer, a size of a grid.\n";
+  std::cout << "The second and third parameters are min and max of the grid. If you want those numbers to be computed "
+               "based on the data, set them both to -1 \n";
+  std::cout << "The fourth parameter of the program is the dimension of persistence to be used to construct "
+               "persistence landscape on a grid. If your file contains ";
+  std::cout << "the information about dimension of birth-death pairs, please provide here the dimension of intervals "
+               "you want to use. If your input files consist only ";
+  std::cout << "of birth-death pairs, please set the fourth parameter to -1 \n";
+  std::cout << "The remaining parameters are the names of files with persistence diagrams. \n";
+
+  if (argc < 5) {
+    std::cout << "Wrong parameter list, the program will now terminate \n";
+    return 1;
+  }
+
+  size_t size_of_grid = (size_t)atoi(argv[1]);
+  double min_ = atof(argv[2]);
+  double max_ = atof(argv[3]);
+  int dim = atoi(argv[4]);
+  unsigned dimension = std::numeric_limits<unsigned>::max();
+  if (dim >= 0) {
+    dimension = (unsigned)dim;
+  }
+
+  std::vector<const char*> filenames;
+  for (int i = 5; i < argc; ++i) {
+    filenames.push_back(argv[i]);
+  }
+
+  std::cout << "Creating persistence landscapes...\n";
+  for (size_t i = 0; i != filenames.size(); ++i) {
+    std::cout << "Creating persistence landscape on a grid based on a file : " << filenames[i] << std::endl;
+    Persistence_landscape_on_grid l;
+    if ((min_ != -1) || (max_ != -1)) {
+      l = Persistence_landscape_on_grid(filenames[i], min_, max_, size_of_grid, dimension);
+    } else {
+      // (min_ == -1) && (max_ == -1), in this case the program will find min_ and max_ based on the data.
+      l = Persistence_landscape_on_grid(filenames[i], size_of_grid, dimension);
+    }
+    std::stringstream ss;
+    ss << filenames[i] << ".g_land";
+    l.print_to_file(ss.str().c_str());
+  }
+  std::cout << "Done \n";
+  return 0;
+}