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annotate +blockmatrix/getDivision.m @ 1037:2d7ba44340d0 feature/burgers1d

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Pass scheme specific parameters as cell array. This will enabale constructDiffOps to be more general. In addition, allow for schemes returning function handles as diffOps, which is currently how non-linear schemes such as Burgers1d are implemented.
author Vidar Stiernström <vidar.stiernstrom@it.uu.se>
date Fri, 18 Jan 2019 09:02:02 +0100
parents a5f1b0267dba
children
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f0ef314e2070 blockmatrix: added function to calculate the block division for a given blockmatrix.
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1 function div = getDivision(bm)
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2 if ~blockmatrix.isBlockmatrix(bm)
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3 error('blockmatrix:getDivision:NotABlockmatrix', 'Input is not a blockmatrix');
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4 end
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6 if isempty(bm)
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7 div = {[],[]};
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8 return
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9 end
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11 div = {row_height(bm),col_width(bm)};
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12 end
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15 function m = col_width(C)
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16 m = zeros(1,size(C,2));
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17 for j = 1:size(C,2)
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18 for i = 1:size(C,1)
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19 if isNullMatrix(C{i,j})
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20 continue
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21 end
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22 m(j) = size(C{i,j},2);
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23 end
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24 end
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27 function n = row_height(C)
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28 n = zeros(1,size(C,1));
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29 for i = 1:size(C,1)
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30 for j = 1:size(C,2)
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31 if isNullMatrix(C{i,j})
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32 continue
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33 end
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34 n(i) = size(C{i,j},1);
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35 end
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39 function b = isNullMatrix(A)
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40 [n, m] = size(A);
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41 b = n == 0 && m == 0;
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42 end