Matrix YOUNG4C

YOUNG4C: Acoustic scattering

from set ACOUST, from the Harwell-Boeing Collection

[Download] [Visualizations] [Matrix Statistics] [Set Information]

Download as

Compressed MatrixMarket format file: young4c.mtx.gz (13172 bytes)

Compressed Harwell-Boeing format file: young4c.csa.gz (9792 bytes)

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Visualizations

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

Structure Plot	City Plot

	3D Interactive City Plot
	[ VRML Version 2, gzipped ] 177693 bytes

Size Type

841 x 841, 4089 entries complex symmetric indefinite

Nonzeros

total diagonal below diagonal above diagonal A-A' A-A*
4089 841 1624 1624 0 190

Column Data Row Data

Average nonzeros per column : 4.9
Standard deviation : 0.36
index nonzeros
longest 31 5
shortest 1 3
Average nonzeros per row : 4.9
Standard deviation : 0.36
index nonzeros
longest 31 5
shortest 1 3

Bandwidths Profile Storage

lower 30 upper 30
average |i-j| 12 std.dev. 14

min max ave. std.dev.
lower bandwidth 1 30 29 5.1
upper bandwidth 1 30 29 5.1
Symmetric skyline storage requirement:24417

Heaviest diagonals

offset from main 0 -29 -1 1 29
nonzeros 841 812 812 812 812
accumulated percent 20.57 40.43 60.28 80.14 100.00

Top 5 out of 5 nonvoid diagonals.

Conditioning

Frobenius norm 7.2e+03 condition number (est.) 7.1e+02
2-norm (est.) 7e+02 diagonal dominance no

Set Information

Set ACOUST
Source:	David P. Young, Boeing Computer Services, Seattle, Washington
Discipline:	Dynamic analysis in structural engineering
Accession:	Spring 1984

The Matrix Market is a service of the Mathematical and Computational Sciences Division / Information Technology Laboratory / National Institute of Standards and Technology.

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Last change in this page: Wed Sep 22 13:33:21 US/Eastern 2004 [Comments: ]