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annotate spdiag.m @ 774:66eb4a2bbb72 feature/grids

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Remove default scaling of the system. The scaling doens't seem to help actual solutions. One example that fails in the flexural code. With large timesteps the solutions seems to blow up. One particular example is profilePresentation on the tdb_presentation_figures branch with k = 0.0005
author Jonatan Werpers <jonatan@werpers.com>
date Wed, 18 Jul 2018 15:42:52 -0700
parents 8e0067aef5b0
children e76321b89c1e
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>
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1 function A = spdiag(a,i)
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9c0192cf099f Added default argument to spdiag.
Jonatan Werpers <jonatan@werpers.com>
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2 default_arg('i',0);
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8e0067aef5b0 Make spdiag accept both row and column vectors
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8e0067aef5b0 Make spdiag accept both row and column vectors
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parents: 81
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4 if isrow(a)
8e0067aef5b0 Make spdiag accept both row and column vectors
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parents: 81
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5 a = a';
8e0067aef5b0 Make spdiag accept both row and column vectors
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parents: 81
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6 end
8e0067aef5b0 Make spdiag accept both row and column vectors
Jonatan Werpers <jonatan@werpers.com>
parents: 81
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0be702829bb9 Generalized spdiag. Added function for createing a banded sparse matrix.
Jonatan Werpers <jonatan@werpers.com>
parents: 45
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8 n = length(a)-abs(i);
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b6cfc04e576c Changed spdiag to be more like matlabs diag.
Jonatan Werpers <jonatan@werpers.com>
parents: 27
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9 A = spdiags(a,i,n,n);
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97a638f91fb8 Added function spdiag(). Fixed a bunch of bugs in the Wave2dCurve scheme.
Jonatan Werpers <jonatan@werpers.com>
parents:
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