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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