[37] | 1 | function r = cat(dim, varargin) |
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| 2 | % CAT Concatenate arrays. |
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| 3 | % (Quaternion overloading of standard Matlab function.) |
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| 4 | |
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| 5 | % Copyright © 2005 Stephen J. Sangwine and Nicolas Le Bihan. |
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| 6 | % See the file : Copyright.m for further details. |
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| 7 | |
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| 8 | error(nargchk(3, inf, nargin)), error(nargoutchk(0, 1, nargout)) |
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| 9 | |
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| 10 | a = varargin{1}; |
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| 11 | b = varargin{2}; |
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| 12 | |
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| 13 | if ispure(a) ~= ispure(b) |
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| 14 | error('Cannot concatenate mixture of pure and full quaternion arrays'); |
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| 15 | end |
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| 16 | |
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| 17 | if ispure(a) |
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| 18 | r = quaternion(cat(dim, x(a), x(b)), ... |
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| 19 | cat(dim, y(a), y(b)), ... |
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| 20 | cat(dim, z(a), z(b))); |
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| 21 | else |
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| 22 | r = quaternion(cat(dim, s(a), s(b)), ... |
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| 23 | cat(dim, x(a), x(b)), ... |
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| 24 | cat(dim, y(a), y(b)), ... |
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| 25 | cat(dim, z(a), z(b))); |
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| 26 | end |
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| 27 | |
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| 28 | if nargin > 3 |
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| 29 | r = cat(dim, r, varargin{3:end}); |
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| 30 | end |
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