Does MATLAB qr function employ the SuiteSparseQR (multifrontal multithreaded sparse QR factorization) in SuiteSparse ?

6 views (last 30 days)
Cem Gormezano
Cem Gormezano on 4 Jul 2020
I am using the function [Q,R,P] = qr(A,0) to have a rank-revealing qr factorization of sparse matrix A. I am wondering if MATLAB by default employs spqr within SuiteSparse. Furthermore, when A is not full rank, I get zero diagonals in R, how would I employ this property of R to deduce the rank of A.
Thank you !!!

Sign in to answer this question.

Answers (0)

Categories

Find more on Mathematics in Help Center and File Exchange

Tags

Products

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!