Matrix CAN 292

CAN 292: Structures problems in aircraft design

from set CANNES, from the Harwell-Boeing Collection

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Compressed MatrixMarket format file: can__292.mtx.gz (3119 bytes)

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Visualizations

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Structure Plot

Size Type

292 x 292, 1416 entries pattern symmetric indefinite

Nonzeros

total diagonal below diagonal above diagonal A-A'
2540 292 1124 1124 0

Column Data Row Data

Average nonzeros per column : 8.7
Standard deviation : 5.4
index nonzeros
longest 2 35
shortest 8 4
Average nonzeros per row : 8.7
Standard deviation : 5.4
index nonzeros
longest 2 35
shortest 8 4

Bandwidths Profile Storage

lower 283 upper 283
average |i-j| 39 std.dev. 65

min max ave. std.dev.
lower bandwidth 1 283 80 83
upper bandwidth 1 283 80 83
Symmetric skyline storage requirement:23462

Heaviest diagonals

offset from main 0 -4 4 -1 1 -3 3 -5 5 -2
nonzeros 292 160 160 145 145 138 138 113 113 34
accumulated percent 11.50 17.80 24.09 29.80 35.51 40.94 46.38 50.83 55.28 56.61

Top 10 out of 421 nonvoid diagonals.

Conditioning

Pattern matrix. No conditioning information.

Set Information

Set CANNES
Source:	Lucien Marro, Programmation Scientifique, Aerospatiale Cannes, France.
Discipline:	Finite-element structures problems in aircraft design.
Accession:	June 3, 1981

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Last change in this page: Wed Sep 22 13:33:29 US/Eastern 2004 [Comments: ]