Mercurial > repos > public > sbplib
changeset 454:d5bce13ece23 feature/grids
Switch to first order start in CdiffImplicit to make the scheme more robust.
| author | Jonatan Werpers <jonatan@werpers.com> |
|---|---|
| date | Thu, 11 May 2017 14:20:42 +0200 |
| parents | 819345fe7ff1 |
| children | cf313abea04b |
| files | +time/CdiffImplicit.m |
| diffstat | 1 files changed, 3 insertions(+), 1 deletions(-) [+] |
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diff -r 819345fe7ff1 -r d5bce13ece23 +time/CdiffImplicit.m --- a/+time/CdiffImplicit.m Thu May 11 10:09:52 2017 +0200 +++ b/+time/CdiffImplicit.m Thu May 11 14:20:42 2017 +0200 @@ -63,7 +63,9 @@ v_prev = f1; I = speye(m); - v = (1/k^2*A)\((1/k^2*A - 1/2*B)*f1 + (1/k*I - 1/2*C)*f2 + 1/2*G(0)); + % v = (1/k^2*A)\((1/k^2*A - 1/2*B)*f1 + (1/k*I - 1/2*C)*f2 + 1/2*G(0)); + v = f1 + k*f2; + if ~issparse(A) || ~issparse(B) || ~issparse(C) error('LU factorization with full pivoting only works for sparse matrices.')