Matrix properties
number of rows	71,952
number of columns	2,704
nonzeros	1,146,848
structural full rank?	no
structural rank	2,673
# of blocks from dmperm	5
# strongly connected comp.	32
explicit zero entries	4,384
nonzero pattern symmetry	0%
numeric value symmetry	0%
type	real
structure	rectangular
Cholesky candidate?	no
positive definite?	no

author	V. Pereyra
editor	T. Davis
date	2003
kind	least squares problem
2D/3D problem?	no

Ordering statistics:	result
nnz(V) for QR, upper bound nnz(L) for LU, with COLAMD	119,169,475
nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD	1,544,068

Note that all matrix statistics (except nonzero pattern symmetry) exclude the 4384 explicit zero entries.

SVD-based statistics:
norm(A)	5.68648
min(svd(A))	0
cond(A)	Inf
rank(A)	2,671
sprank(A)-rank(A)	2
null space dimension	33
full numerical rank?	no
singular value gap	1634.09

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.