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annotate +blockmatrix/isBlockmatrix.m @ 1198:2924b3a9b921 feature/d2_compatible

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Add OpSet for fully compatible D2Variable, created from regular D2Variable by replacing d1 by first row of D1. Formal reduction by one order of accuracy at the boundary point.
author Martin Almquist <malmquist@stanford.edu>
date Fri, 16 Aug 2019 14:30:28 -0700
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
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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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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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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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58 b = true;
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59 end