I need to extract L and U factors from a tridiagonal matrix factorization for my application. Would it be possible to have this feature?
The matrix is diagonally dominant, so off-diagonal pivoting may not happen. (For the general case where off-diagonal pivoting may happen, a permutation could be returned as well) Thanks, Eka On Wednesday, December 18, 2013 3:12:12 AM UTC-5, Andreas Noack Jensen wrote: > > Extracting the factors of an tridiagonal LU factorisation is not > supported. You can see the names of the storage vectors by writing names(F) > and the U is easily constructed from those. L is more tricky because of > pivoting. > > Best > Andreas > > > 2013/12/18 Eka Palamadai <[email protected] <javascript:>> > >> How do i factorize a tridiagonal matrix in Julia? >> I tried F=lufact(A) as specified in the manual and it works. >> But i am not sure how to access the L and U factors from F. >> The manual specifies indexing as F[:L], but it doesn't work. >> >> Thanks, >> Eka >> >> > > > > -- > Med venlig hilsen > > Andreas Noack Jensen >
