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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
// Copyright (C) 2012 - Scilab Enterprises - Adeline CARNIS
//
// 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_V2.1-en.txt
function demo_rosenbrock()
mprintf(_("Running optimization ...\n"));
function [ f , g , ind ] = rosenbrock ( x , ind )
f = 100*(x(2)-x(1)^2)^2+(1-x(1))^2;
g(1) = - 400. * ( x(2) - x(1)**2 ) * x(1) -2. * ( 1. - x(1) )
g(2) = 200. * ( x(2) - x(1)**2 )
endfunction
x0 = [-1.2 1];
[f, x] = optim(rosenbrock, x0);
//
// Display results
//
mprintf("x = %s\n", strcat(string(x)," "));
mprintf("f = %e\n", f);
//
// Load this script into the editor
//
m = messagebox(_("View Code?"), "Question", "question", [_("Yes") _("No")], "modal")
if(m == 1)
filename = "optim_rosenbrock.sce";
dname = get_absolute_file_path(filename);
editor ( dname + filename );
end
endfunction
demo_rosenbrock();
clear demo_rosenbrock;
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