From 9899ae167f281d10b1684dfcd02c6838c5bf28df Mon Sep 17 00:00:00 2001
From: Gard Spreemann <gspreemann@gmail.com>
Date: Fri, 2 Feb 2018 13:51:45 +0100
Subject: GUDHI 2.1.0 as released by upstream in a tarball.

---
 .../plot_persistence_intervals.cpp                 | 53 ++++++++++++++++++++++
 1 file changed, 53 insertions(+)
 create mode 100644 utilities/Persistence_representations/persistence_intervals/plot_persistence_intervals.cpp

(limited to 'utilities/Persistence_representations/persistence_intervals/plot_persistence_intervals.cpp')

diff --git a/utilities/Persistence_representations/persistence_intervals/plot_persistence_intervals.cpp b/utilities/Persistence_representations/persistence_intervals/plot_persistence_intervals.cpp
new file mode 100644
index 00000000..33387802
--- /dev/null
+++ b/utilities/Persistence_representations/persistence_intervals/plot_persistence_intervals.cpp
@@ -0,0 +1,53 @@
+/*    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_intervals.h>
+
+#include <iostream>
+#include <limits>
+#include <vector>
+#include <utility>
+
+using Persistence_intervals = Gudhi::Persistence_representations::Persistence_intervals;
+
+int main(int argc, char** argv) {
+  if ((argc != 3) && (argc != 2)) {
+    std::cout << "This program creates a gnuplot script from a single persistence diagram file (*.pers).\n"
+              << "To run this program, please provide the name of a file with persistence diagram.\n"
+              << "The second optional parameter of a program is the dimension of the persistence that is to be used. "
+              << "If your file contains only birth-death pairs, you can skip this parameter.\n";
+    return 1;
+  }
+  unsigned dimension = std::numeric_limits<unsigned>::max();
+  int dim = -1;
+  if (argc == 3) {
+    dim = atoi(argv[2]);
+  }
+  if (dim >= 0) {
+    dimension = (unsigned)dim;
+  }
+  std::vector<std::pair<double, double> > intervals =
+      Gudhi::Persistence_representations::read_persistence_intervals_in_one_dimension_from_file(argv[1], dimension);
+  Persistence_intervals b(intervals);
+  b.plot(argv[1]);
+  return 0;
+}
-- 
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