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[37] | 1 | function B = block_repeat(A,p) |
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| 2 | % make a sparse, block diagonal matrix by repeating A p times as the blocks. |
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| 3 | |
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| 4 | Adim = size(A); |
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| 5 | rows = Adim(1); |
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| 6 | cols = Adim(2); |
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| 7 | |
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| 8 | %for i = 1:p |
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| 9 | % block_row = [zeros(cols*(i-1),rows); A'; zeros(cols*(p-i),rows)]'; |
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| 10 | % B = [B;block_row]; |
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| 11 | %end |
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| 12 | |
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| 13 | newrows = rows*p; |
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| 14 | newcols = cols*p; |
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| 15 | |
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| 16 | B = sparse([],[],[],newrows,newcols,rows*cols*p); |
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| 17 | for i = 0:p-1 |
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| 18 | for j = 1:rows |
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| 19 | for k = 1:cols |
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| 20 | B(i*rows+j,i*cols+k) = A(j,k); |
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| 21 | end |
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| 22 | end |
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| 23 | end |
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