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annotate +sbp/diagInd.m @ 958:72cd29107a9a feature/poroelastic

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Temporary changes in multiblock.DiffOp. Change traction operators in Elastic2dvariable to be true boundary operators. But adjoint FD conv test fails for dirichlet BC so need to debug!
author Martin Almquist <malmquist@stanford.edu>
date Wed, 05 Dec 2018 18:58:10 -0800
parents 32b39dc44474
children
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32b39dc44474 Removed repository inside +sbp to make it part of the root repo.
Jonatan Werpers <jonatan@werpers.com>
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1 function A = diagInd(d,n,m)
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2 A = zeros(n,length(d));
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3 for i = 1:length(d)
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4 i0 = 1;
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5 j0 = d(i)+1;
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6
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7 I = i0 + (0:(n-1))';
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8 J = j0 + (0:(n-1))';
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9
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10 A(:,i) = matInd2VecInd(I,J,n);
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12 end
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13 end
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15 function I = matInd2VecInd(i,j,n)
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16 I = i + (j-1)*n;
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17 end