LOCK2232: Structural engineering matrices (unassembled)
Launch umbilical tower

from set LOCKHEED, from the Harwell-Boeing Collection

Note: The previously available version of this matrix in Matrix Market format refects an assembly which differs from what the contributor intended and has been withdrawn. Please discard it if you have taken a copy. The Harwell-Boeing file remains, but requires proper interpretation.

Download as

Matrix Market format not available.
Compressed Harwell-Boeing format file: lock2232.pse.gz (12691 bytes)

Visualizations

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

Structure Plot

Matrix Statistics

Size	Type
2232 x 2232, 11256 entries	pattern symmetric positive definite
Nonzeros
total diagonal below diagonal above diagonal A-A' 80352 2208 39072 39072 0
Column Data	Row Data
Average nonzeros per column : 36 Standard deviation : 11 index nonzeros longest 289 48 shortest 1 0	Average nonzeros per row : 36 Standard deviation : 11 index nonzeros longest 289 48 shortest 1 0
Bandwidths	Profile Storage
lower 150 upper 150 average |i-j| 50 std.dev. 38	min max ave. std.dev. lower bandwidth 0 149 54 50 upper bandwidth 0 149 54 50 Symmetric skyline storage requirement:121368
Heaviest diagonals
offset from main 0 -1 1 -2 2 -3 3 -4 4 -24 nonzeros 2208 1880 1880 1552 1552 1224 1224 896 896 600 accumulated percent 2.75 5.09 7.43 9.36 11.29 12.81 14.34 15.45 16.57 17.31 Top 10 out of 271 nonvoid diagonals.
Conditioning
Pattern matrix. No conditioning information.

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Last change in this page: Wed Sep 22 13:33:43 US/Eastern 2004 [Comments: ]