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annotate toolboxes/FullBNT-1.0.7/netlab3.3/rosen.m @ 0:e9a9cd732c1e tip

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first hg version after svn
author wolffd
date Tue, 10 Feb 2015 15:05:51 +0000
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wolffd@0 1 function y = rosen(x)
wolffd@0 2 %ROSEN Calculate Rosenbrock's function.
wolffd@0 3 %
wolffd@0 4 % Description
wolffd@0 5 % Y = ROSEN(X) computes the value of Rosenbrock's function at each row
wolffd@0 6 % of X, which should have two columns.
wolffd@0 7 %
wolffd@0 8 % See also
wolffd@0 9 % DEMOPT1, ROSEGRAD
wolffd@0 10 %
wolffd@0 11
wolffd@0 12 % Copyright (c) Ian T Nabney (1996-2001)
wolffd@0 13
wolffd@0 14 % Calculate value of Rosenbrock's function: x should be nrows by 2 columns
wolffd@0 15
wolffd@0 16 y = 100 * ((x(:,2) - x(:,1).^2).^2) + (1.0 - x(:,1)).^2;