Matrix properties
number of rows	4,654
number of columns	3,320
nonzeros	93,091
structural full rank?	no
structural rank	2,690
# of blocks from dmperm	163
# strongly connected comp.	25
explicit zero entries	0
nonzero pattern symmetry	0%
numeric value symmetry	0%
type	real
structure	rectangular
Cholesky candidate?	no
positive definite?	no

author	D. Maragal
editor	T. Davis
date	2008
kind	least squares problem
2D/3D problem?	no

Additional fields	size and type
b	full 4654-by-1

Notes:

rank deficient (rank(A) < sprank(A) < size(A,2))
rank: 2147 sprank: 2690 columns: 3320           

Ordering statistics:	result
nnz(V) for QR, upper bound nnz(L) for LU, with COLAMD	3,147,864
nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD	3,142,413

SVD-based statistics:
norm(A)	16.3691
min(svd(A))	2.21291e-31
cond(A)	7.39707e+31
rank(A)	2,147
sprank(A)-rank(A)	543
null space dimension	1,173
full numerical rank?	no
singular value gap	1.80246e+10

singular values (MAT file):	click here
SVD method used:	s = svd (full (A)) ;
status:	ok

For a description of the statistics displayed above, click here.

Maintained by Tim Davis, last updated 12-Mar-2014.
Matrix pictures by cspy, a MATLAB function in the CSparse package.
Matrix graphs by Yifan Hu, AT&T Labs Visualization Group.