## Copyright (C) 1995, 1996, 1997 Kurt Hornik ## ## 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 2, 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 file. If not, write to the Free Software Foundation, ## 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. ## usage: cross (x, y) ## ## Computes the vector cross product of the two 3-dimensional vectors x ## and y. ## Author: KH <Kurt.Hornik@ci.tuwien.ac.at> ## Description: Vector cross product of two 3-dimensional vectors function z = cross (x, y) if (nargin != 2) usage ("cross (x, y)"); endif if !( (is_vector (x)) && (length (x) == 3) ... && (is_vector (y)) && (length (y) == 3) ) error ("cross: both x and y must be 3-dimensional vectors"); endif x = reshape (x, 3, 1); y = reshape (y, 3, 1); e = eye (3, 3); for k = 1 : 3 z(k) = det ([x y e(:, k)]); endfor endfunction

Generated by Doxygen 1.6.0 Back to index