JAGMESH7: Graded L-shape patterns
THree hole problem

from set JAGMESH, from the Harwell-Boeing Collection

Download as

Compressed MatrixMarket format file: jagmesh7.mtx.gz (9162 bytes)
Compressed Harwell-Boeing format file: jagmesh7.psa.gz (8365 bytes)

Visualizations

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Structure Plot

Matrix Statistics

Size	Type
1138 x 1138, 4294 entries	pattern symmetric indefinite
Nonzeros
total diagonal below diagonal above diagonal A-A' 7450 1138 3156 3156 0
Column Data	Row Data
Average nonzeros per column : 6.5 Standard deviation : 0.84 index nonzeros longest 2 7 shortest 202 4	Average nonzeros per row : 6.5 Standard deviation : 0.84 index nonzeros longest 2 7 shortest 202 4
Bandwidths	Profile Storage
lower 904 upper 904 average |i-j| 23 std.dev. 94	min max ave. std.dev. lower bandwidth 1 904 38 1.2e+02 upper bandwidth 1 904 38 1.2e+02 Symmetric skyline storage requirement:43148
Heaviest diagonals
offset from main 0 -1 1 -3 3 -10 10 -2 2 -11 nonzeros 1138 932 932 280 280 254 254 234 234 188 accumulated percent 15.28 27.79 40.30 44.05 47.81 51.22 54.63 57.77 60.91 63.44 Top 10 out of 355 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: ]