File: optim_output.sce

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// Scilab ( http://www.scilab.org/ ) - This file is part of Scilab
// Copyright (C) 2009 - DIGITEO - Michael Baudin
// Copyright (C) 2010 - DIGITEO - Allan CORNET
//
// This file must be used under the terms of the CeCILL.
// This source file is licensed as described in the file COPYING, which
// you should have received as part of this distribution.  The terms
// are also available at
// http://www.cecill.info/licences/Licence_CeCILL_V2-en.txt

function demo_optim_output()

  mprintf(_("Running optimization ...\n"));

  xref = [1;2;3];
  x0 = [1;-1;1];

  function [f,g,ind] = cost(x,ind)
    if ( ind == 1 | ind == 4 ) then
      f = 0.5*norm(x-xref)^2;
    end

    if ( ind == 1 | ind == 4 ) then
      g = x - xref;
    end

    if ( ind == 1 ) then
      mprintf("===========\n")
      mprintf("x = %s\n", strcat(string(x)," "))
      mprintf("f = %e\n", f)
      g=x-xref;
      mprintf("g = %s\n", strcat(string(g)," "))
    end

  endfunction

  [f, xopt] = optim(cost, x0, imp=-1)
  //
  // Load this script into the editor
  //
  filename = 'optim_output.sce';
  dname = get_absolute_file_path(filename);
  editor ( dname + filename );

endfunction

demo_optim_output()
clear demo_optim_output;