You can file an issue to have this as a feature request, or better yet, submit a pull request with code that implements this feature. :) Thanks,
Jiahao Chen Staff Research Scientist MIT Computer Science and Artificial Intelligence Laboratory On Thu, Mar 20, 2014 at 5:41 PM, Eka Palamadai <[email protected]> wrote: > 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]> >>> >>> 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
