1 files changed, 67 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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+++ b/src/Persistence_representations/utilities/persistence_landscapes_on_grid/create_landscapes_on_grid.cpp
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+/*    This file is part of the Gudhi Library - https://gudhi.inria.fr/ - which is released under MIT.
+ *    See file LICENSE or go to https://gudhi.inria.fr/licensing/ for full license details.
+ *    Author(s):       Pawel Dlotko
+ *
+ *    Copyright (C) 2016 Inria
+ *
+ *    Modification(s):
+ *      - YYYY/MM Author: Description of the modification
+ */
+
+#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 landscapes on grid files (*.g_land) of persistence diagrams files "
+            << "(*.pers) provided as an input.\n"
+            << "The first parameter of a program is an integer, a size of a grid.\n"
+            << "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"
+            << "The fourth parameter of this program is a dimension of persistence that will be used in creation of "
+            << "the persistence heat maps."
+            << "If your input files contains persistence pairs of various dimension, as a fourth parameter of the "
+            << "procedure please provide the dimension of persistence you want to use."
+            << "If in your files there are only birth-death pairs of the same dimension, set the fourth parameter to "
+            << "-1.\n"
+            << "The remaining parameters are the names of files with persistence diagrams. \n";
+
+  if (argc < 6) {
+    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]);
+  }
+
+  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());
+  }
+  return 0;
+}