Matrix properties
number of rows	21,255
number of columns	10,152
nonzeros	537,694
structural full rank?	no
structural rank	10,052
# of blocks from dmperm	89
# strongly connected comp.	13
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 21255-by-1

Notes:

rank deficient (rank(A) < sprank(A) < size(A,2))
sprank: 10052 columns: 10152                    

Ordering statistics:	result
nnz(V) for QR, upper bound nnz(L) for LU, with COLAMD	102,878,296
nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD	51,029,129

SVD-based statistics:
norm(A)	13.3372
min(svd(A))	3.99477e-33
cond(A)	3.33867e+33
rank(A)	8,331
sprank(A)-rank(A)	1,721
null space dimension	1,821
full numerical rank?	no
singular value gap	3.79813e+08

singular values (MAT file):	click here
SVD method used:	s = svd (full (R)) ; where [~,R,E] = spqr (A) with droptol of zero
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.