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1 | function [r, c] = size(q, dim) |
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2 | % SIZE Size of matrix. |
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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(1, 2, nargin)), error(nargoutchk(0, 2, nargout)) |
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9 | |
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10 | xq = x(q); [xr, xc] = size(xq); |
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11 | if ispure(q) |
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12 | if [xr, xc] ~= size(y(q)) | [xr, xc] ~= size(z(q)) |
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13 | error('Sizes within object differ.') |
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14 | end |
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15 | else |
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16 | if size(s(q)) ~= [xr, xc] | [xr, xc] ~= size(y(q)) | [xr, xc] ~= size(z(q)) |
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17 | error('Sizes within object differ.') |
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18 | end |
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19 | end |
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20 | |
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21 | % In what follows, we use the size of the x component of the quaternion, not the size |
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22 | % of the scalar part, since this could be empty. Otherwise the choice is arbitrary, |
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23 | % since the code above checks that all components of q have the same size. |
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24 | |
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25 | switch nargout |
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26 | case 0 |
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27 | switch nargin |
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28 | case 1 |
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29 | size(xq) |
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30 | case 2 |
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31 | size(xq, dim) |
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32 | end |
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33 | case 1 |
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34 | switch nargin |
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35 | case 1 |
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36 | r = [xr, xc]; |
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37 | case 2 |
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38 | r = size(xq, dim); |
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39 | end |
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40 | case 2 |
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41 | switch nargin |
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42 | case 1 |
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43 | [r, c] = size(xq); |
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44 | case 2 |
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45 | [r, c] = size(xq, dim); |
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46 | end |
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47 | otherwise |
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48 | error('Unhandled case.') |
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49 | end |
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50 | |
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51 | |
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52 | |
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