Matrix properties
number of rows	1,850
number of columns	712
nonzeros	8,636
structural full rank?	yes
structural rank	712
# of blocks from dmperm	10
# strongly connected comp.	1
explicit zero entries	122
nonzero pattern symmetry	0%
numeric value symmetry	0%
type	real
structure	rectangular
Cholesky candidate?	no
positive definite?	no

author	M. Saunders
editor	I. Duff, R. Grimes, J. Lewis
date	1979
kind	least squares problem
2D/3D problem?	no

Additional fields	size and type
b	full 1850-by-1

Ordering statistics:	result
nnz(V) for QR, upper bound nnz(L) for LU, with COLAMD	82,533
nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD	8,887

Note that all matrix statistics (except nonzero pattern symmetry) exclude the 122 explicit zero entries.

SVD-based statistics:
norm(A)	2.12334
min(svd(A))	0.00151138
cond(A)	1404.9
rank(A)	712
sprank(A)-rank(A)	0
null space dimension	0
full numerical rank?	yes

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.