JAGMESH9: Graded L-shape patterns
Pinched hole problem

from set JAGMESH, from the Harwell-Boeing Collection

Download as

Compressed MatrixMarket format file: jagmesh9.mtx.gz (11167 bytes)
Compressed Harwell-Boeing format file: jagmesh9.psa.gz (10182 bytes)

Visualizations

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Structure Plot

Matrix Statistics

Size	Type
1349 x 1349, 5225 entries	pattern symmetric indefinite
Nonzeros
total diagonal below diagonal above diagonal A-A' 9101 1349 3876 3876 0
Column Data	Row Data
Average nonzeros per column : 6.7 Standard deviation : 0.67 index nonzeros longest 21 7 shortest 39 4	Average nonzeros per row : 6.7 Standard deviation : 0.67 index nonzeros longest 21 7 shortest 39 4
Bandwidths	Profile Storage
lower 1025 upper 1025 average |i-j| 31 std.dev. 77	min max ave. std.dev. lower bandwidth 1 1025 52 1e+02 upper bandwidth 1 1025 52 1e+02 Symmetric skyline storage requirement:70361
Heaviest diagonals
offset from main 0 -1 1 -16 16 -15 15 -14 14 -13 nonzeros 1349 1233 1233 217 217 203 203 189 189 175 accumulated percent 14.82 28.37 41.92 44.30 46.69 48.92 51.15 53.22 55.30 57.22 Top 10 out of 477 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: ]