diff --git a/examples/plotter1d.cpp b/examples/plotter1d.cpp
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+/*
+ #
+ #  File        : plotter1d.cpp
+ #                ( C++ source file )
+ #
+ #  Description : A simple math formula plotter.
+ #                This file is a part of the CImg Library project.
+ #                ( http://cimg.eu )
+ #
+ #  Copyright   : David Tschumperle
+ #                ( http://tschumperle.users.greyc.fr/ )
+ #
+ #  License     : CeCILL v2.0
+ #                ( http://www.cecill.info/licences/Licence_CeCILL_V2-en.html )
+ #
+ #  This software is governed by the CeCILL  license under French law and
+ #  abiding by the rules of distribution of free software.  You can  use,
+ #  modify and/ or redistribute the software under the terms of the CeCILL
+ #  license as circulated by CEA, CNRS and INRIA at the following URL
+ #  "http://www.cecill.info".
+ #
+ #  As a counterpart to the access to the source code and  rights to copy,
+ #  modify and redistribute granted by the license, users are provided only
+ #  with a limited warranty  and the software's author,  the holder of the
+ #  economic rights,  and the successive licensors  have only  limited
+ #  liability.
+ #
+ #  In this respect, the user's attention is drawn to the risks associated
+ #  with loading,  using,  modifying and/or developing or reproducing the
+ #  software by the user in light of its specific status of free software,
+ #  that may mean  that it is complicated to manipulate,  and  that  also
+ #  therefore means  that it is reserved for developers  and  experienced
+ #  professionals having in-depth computer knowledge. Users are therefore
+ #  encouraged to load and test the software's suitability as regards their
+ #  requirements in conditions enabling the security of their systems and/or
+ #  data to be ensured and,  more generally, to use and operate it in the
+ #  same conditions as regards security.
+ #
+ #  The fact that you are presently reading this means that you have had
+ #  knowledge of the CeCILL license and that you accept its terms.
+ #
+*/
+
+// Include CImg library file and use its main namespace
+#include "CImg.h"
+using namespace cimg_library;
+
+// Main procedure
+//----------------
+int main(int argc,char **argv) {
+
+  // Read command line argument.
+  cimg_usage("Simple plotter of mathematical formulas");
+  const char *const formula = cimg_option("-f","sin(x/8) % cos(2*x)","Formula to plot");
+  const float x0 = cimg_option("-x0",-5.0f,"Minimal X-value");
+  const float x1 = cimg_option("-x1",5.0f,"Maximal X-value");
+  const int resolution = cimg_option("-r",1024,"Plot resolution");
+  const unsigned int nresolution = resolution>1?resolution:1024;
+  const unsigned int plot_type = cimg_option("-p",1,"Plot type");
+  const unsigned int vertex_type = cimg_option("-v",1,"Vertex type");
+
+  // Create plot data.
+  CImg<double> values(4,nresolution,1,1,0);
+  const unsigned int r = nresolution - 1;
+  cimg_forY(values,X) values(0,X) = x0 + X*(x1 - x0)/r;
+  cimg::eval(formula,values).move_to(values);
+
+  // Display interactive plot window.
+  values.display_graph(formula,plot_type,vertex_type,"X-axis",x0,x1,"Y-axis");
+
+  // Quit.
+  return 0;
+}