Mercurial > repos > public > sbplib
annotate diags.m @ 1033:037f203b9bf5 feature/burgers1d
Merge with branch feature/advectioRV to utilize the +rv package
author | Vidar Stiernström <vidar.stiernstrom@it.uu.se> |
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date | Thu, 17 Jan 2019 10:44:12 +0100 |
parents | 0b87863cb29c |
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rev | line source |
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5eb312dfe2ab
Add full matrix equivalent of spdiags
Jonatan Werpers <jonatan@werpers.com>
parents:
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changeset
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1 function A = diags(B,d,m,n) |
5eb312dfe2ab
Add full matrix equivalent of spdiags
Jonatan Werpers <jonatan@werpers.com>
parents:
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changeset
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2 assert(size(B,1) == m); |
5eb312dfe2ab
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Jonatan Werpers <jonatan@werpers.com>
parents:
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changeset
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3 |
5eb312dfe2ab
Add full matrix equivalent of spdiags
Jonatan Werpers <jonatan@werpers.com>
parents:
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4 A = repmat(B(:,1)*0, [1, n]); |
5eb312dfe2ab
Add full matrix equivalent of spdiags
Jonatan Werpers <jonatan@werpers.com>
parents:
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changeset
|
5 |
5eb312dfe2ab
Add full matrix equivalent of spdiags
Jonatan Werpers <jonatan@werpers.com>
parents:
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6 for i = 1:size(B,2) |
5eb312dfe2ab
Add full matrix equivalent of spdiags
Jonatan Werpers <jonatan@werpers.com>
parents:
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7 A(:,d(i)+ (1:m)) = A(:,d(i)+ (1:m)) + diag(B(:,i)); |
5eb312dfe2ab
Add full matrix equivalent of spdiags
Jonatan Werpers <jonatan@werpers.com>
parents:
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changeset
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8 end |
413 | 9 end |