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annotate spdiag.m @ 1343:09a5783a3d37 feature/D2_boundary_opt

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Improve on default choice of number of grid points for each block
author Vidar Stiernström <vidar.stiernstrom@it.uu.se>
date Fri, 14 Oct 2022 14:42:32 +0200
parents e76321b89c1e
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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b6cfc04e576c Changed spdiag to be more like matlabs diag.
Jonatan Werpers <jonatan@werpers.com>
parents: 27
diff changeset
1 function A = spdiag(a,i)
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9c0192cf099f Added default argument to spdiag.
Jonatan Werpers <jonatan@werpers.com>
parents: 51
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2 default_arg('i',0);
555
8e0067aef5b0 Make spdiag accept both row and column vectors
Jonatan Werpers <jonatan@werpers.com>
parents: 81
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3
8e0067aef5b0 Make spdiag accept both row and column vectors
Jonatan Werpers <jonatan@werpers.com>
parents: 81
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4 if isrow(a)
8e0067aef5b0 Make spdiag accept both row and column vectors
Jonatan Werpers <jonatan@werpers.com>
parents: 81
diff changeset
5 a = a';
8e0067aef5b0 Make spdiag accept both row and column vectors
Jonatan Werpers <jonatan@werpers.com>
parents: 81
diff changeset
6 end
8e0067aef5b0 Make spdiag accept both row and column vectors
Jonatan Werpers <jonatan@werpers.com>
parents: 81
diff changeset
7
798
e76321b89c1e Fix bug in spdiag
Jonatan Werpers <jonatan@werpers.com>
parents: 555
diff changeset
8 n = length(a)+abs(i);
45
b6cfc04e576c Changed spdiag to be more like matlabs diag.
Jonatan Werpers <jonatan@werpers.com>
parents: 27
diff changeset
9 A = spdiags(a,i,n,n);
27
97a638f91fb8 Added function spdiag(). Fixed a bunch of bugs in the Wave2dCurve scheme.
Jonatan Werpers <jonatan@werpers.com>
parents:
diff changeset
10 end