McRae/ecology1
circuitscape: circuit theory applied to animal/gene flow. B. McRae, UCSB
| Name |
ecology1 |
| Group |
McRae |
| Matrix ID |
1882 |
|
Num Rows
|
1,000,000 |
|
Num Cols
|
1,000,000 |
|
Nonzeros
|
4,996,000 |
|
Pattern Entries
|
4,996,000 |
|
Kind
|
2D/3D Problem |
|
Symmetric
|
Yes |
|
Date
|
2008 |
|
Author
|
B. McRae |
|
Editor
|
T. Davis |
| Structural Rank |
1,000,000 |
| Structural Rank Full |
true |
|
Num Dmperm Blocks
|
1 |
|
Strongly Connect Components
|
1 |
|
Num Explicit Zeros
|
0 |
|
Pattern Symmetry
|
100% |
|
Numeric Symmetry
|
100% |
|
Cholesky Candidate
|
yes |
|
Positive Definite
|
no |
|
Type
|
real |
| Download |
MATLAB
Rutherford Boeing
Matrix Market
|
| Notes |
Landscape ecology problem, using electrical network theory to model
animal movement an gene flow. The McRae/ecology1 matrix comes from
a 2D, 1000-by-1000 mesh (5 pt stencil). It is an ill-conditioned
symmetric indefinite matrix. Source: Brad McRae, National Center
for Ecological Analysis and Synthesis Santa Barbara, CA.
|
