JAGMESH2: Graded L-shape patterns
Graded L

from set JAGMESH, from the Harwell-Boeing Collection

Download as

Compressed MatrixMarket format file: jagmesh2.mtx.gz (8271 bytes)
Compressed Harwell-Boeing format file: jagmesh2.psa.gz (7698 bytes)

Visualizations

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

Structure Plot

Matrix Statistics

Size	Type
1009 x 1009, 3937 entries	pattern symmetric indefinite
Nonzeros
total diagonal below diagonal above diagonal A-A' 6865 1009 2928 2928 0
Column Data	Row Data
Average nonzeros per column : 6.8 Standard deviation : 0.6 index nonzeros longest 1 7 shortest 9 4	Average nonzeros per row : 6.8 Standard deviation : 0.6 index nonzeros longest 1 7 shortest 9 4
Bandwidths	Profile Storage
lower 992 upper 992 average |i-j| 32 std.dev. 1.1e+02	min max ave. std.dev. lower bandwidth 1 992 55 1.4e+02 upper bandwidth 1 992 55 1.4e+02 Symmetric skyline storage requirement:55306
Heaviest diagonals
offset from main 0 -1 1 -5 5 -4 4 -6 -3 3 nonzeros 1009 847 847 270 270 210 210 150 150 150 accumulated percent 14.70 27.04 39.37 43.31 47.24 50.30 53.36 55.54 57.73 59.91 Top 10 out of 487 nonvoid diagonals.
Conditioning
Pattern matrix. No conditioning information.

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Last change in this page: Wed Sep 22 13:33:40 US/Eastern 2004 [Comments: ]