Matrix properties
number of rows	65,536
number of columns	147,456
nonzeros	589,824
structural full rank?	no
structural rank	64,517
# of blocks from dmperm	258
# strongly connected comp.	32,820
explicit zero entries	0
nonzero pattern symmetry	0%
numeric value symmetry	0%
type	real
structure	rectangular
Cholesky candidate?	no
positive definite?	no

author	M. Bydder
editor	T. Davis
date	2005
kind	computer graphics/vision problem
2D/3D problem?	yes

Additional fields	size and type
b	full 65536-by-1

Notes:

x = lsqr (A,b) ; imagesc (abs (fftshift (fft2 (reshape (x, 384, 384))))) ;

Ordering statistics:	AMD	METIS
nnz(V) for QR, upper bound nnz(L) for LU	90,338,640	67,987,599
nnz(R) for QR, upper bound nnz(U) for LU	7,148,111	5,672,222

Maintained by Tim Davis, last updated 05-Mar-2008.
Matrix pictures by cspy, a MATLAB function in the CSparse package.