Matrix PDE225

PDE225: Partial Differential Equation

generated by MATPDE, from the NEP Collection

[Download] [Visualizations] [Matrix Statistics] [Generator Information]

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Compressed MatrixMarket format file: pde225.mtx.gz (9988 bytes)

Compressed Harwell-Boeing format file: pde225.rua.gz (9131 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 ] 134757 bytes

Size Type

225 x 225, 1065 entries real unsymmetric

Nonzeros

total diagonal below diagonal above diagonal A-A'
1065 225 420 420 420

Column Data Row Data

Average nonzeros per column : 4.7
Standard deviation : 0.48
index nonzeros
longest 17 5
shortest 1 3
Average nonzeros per row : 4.7
Standard deviation : 0.48
index nonzeros
longest 17 5
shortest 1 3

Bandwidths Profile Storage

lower 16 upper 16
average |i-j| 6.3 std.dev. 7

min max ave. std.dev.
lower bandwidth 0 15 14 3.5
upper bandwidth 0 15 14 3.5
Symmetric skyline storage requirement:6103

Heaviest diagonals

offset from main 0 -15 -1 1 15
nonzeros 225 210 210 210 210
accumulated percent 21.13 40.85 60.56 80.28 100.00

Top 5 out of 5 nonvoid diagonals.

Conditioning

Frobenius norm 76 condition number (est.) 1e+02
2-norm (est.) 9.8 diagonal dominance no

Generator Information

Generator MATPDE
Source:	H. Elman, University of Maryland
Discipline:	Partial differential equations

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 13:37:29 US/Eastern 2004 [Comments: ]