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annotate +blockmatrix/isBlockmatrix.m @ 1185:abb1b3ab8c23 feature/rv

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Fix incorrect of RungekuttaRvInstage
author Vidar Stiernström <vidar.stiernstrom@it.uu.se>
date Fri, 05 Jul 2019 18:12:10 +0200
parents a5f1b0267dba
children
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764438b52541 blockmatrix: Added functions to test for block matrcies and divisions.
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1 function b = isBlockmatrix(bm)
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2 if ~iscell(bm)
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3 b = false;
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4 return
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5 end
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6
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a5f1b0267dba Be less strict about what is considered a block matrix
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7 % Make sure all blocks are numerical matrices
203
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8 for i = 1:length(bm)
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9 if ~isnumeric(bm{i})
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10 b = false;
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11 return
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12 end
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13 end
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14
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15 [N,M] = size(bm);
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16 % Make sure column dimensions agree
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17 for i = 1:N
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18 d = [];
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19 for j = 1:M
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20 d_ij = size(bm{i,j},1);
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21 if d_ij == 0
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22 continue
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23 end
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24
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25 if isempty(d)
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26 d = d_ij;
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27 continue
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28 end
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29
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30 if d ~= d_ij
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31 b = false;
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32 return
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33 end
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34 end
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35 end
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36
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37 % Make sure row dimensions agree
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38 for j = 1:M
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39 d = [];
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40 for i = 1:N
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41 d_ij = size(bm{i,j},2);
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42 if d_ij == 0
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43 continue
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44 end
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45
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46 if isempty(d)
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47 d = d_ij;
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48 continue
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49 end
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50
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51 if d ~= d_ij
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52 b = false;
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53 return
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54 end
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55 end
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56 end
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57
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58 b = true;
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59 end