Matrix PDE900

PDE900: Partial Differential Equation

generated by MATPDE, from the NEP Collection

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

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Compressed MatrixMarket format file: pde900.mtx.gz (40214 bytes)

Compressed Harwell-Boeing format file: pde900.rua.gz (37201 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 ] 136771 bytes

Size Type

900 x 900, 4380 entries real unsymmetric

Nonzeros

total diagonal below diagonal above diagonal A-A'
4380 900 1740 1740 1740

Column Data Row Data

Average nonzeros per column : 4.9
Standard deviation : 0.35
index nonzeros
longest 32 5
shortest 1 3
Average nonzeros per row : 4.9
Standard deviation : 0.35
index nonzeros
longest 32 5
shortest 1 3

Bandwidths Profile Storage

lower 31 upper 31
average |i-j| 12 std.dev. 14

min max ave. std.dev.
lower bandwidth 0 30 29 5.2
upper bandwidth 0 30 29 5.2
Symmetric skyline storage requirement:51358

Heaviest diagonals

offset from main 0 -30 -1 1 30
nonzeros 900 870 870 870 870
accumulated percent 20.55 40.41 60.27 80.14 100.00

Top 5 out of 5 nonvoid diagonals.

Conditioning

Frobenius norm 1.5e+02 condition number (est.) 2.9e+02
2-norm (est.) 10 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: ]