1 ## Copyright (C) 2010 Lukas F. Reichlin
3 ## This program is free software: you can redistribute it and/or modify
4 ## it under the terms of the GNU General Public License as published by
5 ## the Free Software Foundation, either version 3 of the License, or
6 ## (at your option) any later version.
8 ## This program is distributed in the hope that it will be useful,
9 ## but WITHOUT ANY WARRANTY; without even the implied warranty of
10 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 ## GNU General Public License for more details.
13 ## You should have received a copy of the GNU General Public License
14 ## along with this program. If not, see <http://www.gnu.org/licenses/>.
16 ## @deftypefn {Function File} {} qj
17 ## Create y-component of a quaternion's vector part.
20 ## q = w + x*qi + y*qj + z*qk
26 ## octave:1> q1 = quaternion (1, 2, 3, 4)
27 ## q1 = 1 + 2i + 3j + 4k
28 ## octave:2> q2 = 1 + 2*qi + 3*qj + 4*qk
29 ## q2 = 1 + 2i + 3j + 4k
36 ## Author: Lukas Reichlin <lukas.reichlin@gmail.com>
46 q = quaternion (0, 0, 1, 0);