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annotate spdiag.m @ 923:d232483eb72f feature/utux2D

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Remove interfaceOptions class
author Martin Almquist <malmquist@stanford.edu>
date Sun, 02 Dec 2018 17:19:48 -0800
parents 8e0067aef5b0
children e76321b89c1e
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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45
b6cfc04e576c Changed spdiag to be more like matlabs diag.
Jonatan Werpers <jonatan@werpers.com>
parents: 27
diff changeset
1 function A = spdiag(a,i)
81
9c0192cf099f Added default argument to spdiag.
Jonatan Werpers <jonatan@werpers.com>
parents: 51
diff changeset
2 default_arg('i',0);
555
8e0067aef5b0 Make spdiag accept both row and column vectors
Jonatan Werpers <jonatan@werpers.com>
parents: 81
diff changeset
3
8e0067aef5b0 Make spdiag accept both row and column vectors
Jonatan Werpers <jonatan@werpers.com>
parents: 81
diff changeset
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
51
0be702829bb9 Generalized spdiag. Added function for createing a banded sparse matrix.
Jonatan Werpers <jonatan@werpers.com>
parents: 45
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