BCSSTM04: BCS Structural Engineering Matrices (eigenvalue matrices)
Oil rig -- not condensed

from set BCSSTRUC1, from the Harwell-Boeing Collection

From generalized eigenvalue problem Kx=(lambda)Mx. This is matrix M; matrix K is BCSSTK04 from BCSSTRUC1 set.

Download as

Compressed MatrixMarket format file: bcsstm04.mtx.gz (776 bytes)
Compressed Harwell-Boeing format file: bcsstm04.rsa.gz (698 bytes)

Visualizations

Click on image to get an enlarged version. Click on label to get an explanation.

Structure Plot	City Plot
	3D Interactive City Plot
	[ VRML Version 2, gzipped ] 16500 bytes

Matrix Statistics

Size	Type
132 x 132, 132 entries	real symmetric positive semi-definite
Nonzeros
total diagonal below diagonal above diagonal A-A' 66 66 0 0 0
Column Data	Row Data
Average nonzeros per column : 0.5 Standard deviation : 0.5 index nonzeros longest 1 1 shortest 4 0	Average nonzeros per row : 0.5 Standard deviation : 0.5 index nonzeros longest 1 1 shortest 4 0
Bandwidths	Profile Storage
lower 1 upper 1 average |i-j| 0 std.dev. 0	min max ave. std.dev. lower bandwidth 1 133 35 44 upper bandwidth 1 133 35 44 Symmetric skyline storage requirement:4620
Heaviest diagonals
offset from main 0 nonzeros 66 accumulated percent 100.00 Top 1 out of 1 nonvoid diagonals.
Conditioning
Frobenius norm 0.82 condition number (est.) Inf 2-norm (est.) 0.17 diagonal dominance no

[ Home ] [ Search ] [ Browse ] [ Resources ]

Last change in this page: Wed Sep 22 13:33:24 US/Eastern 2004 [Comments: ]