| Matrix properties | |
| number of rows | 71,952 |
| number of columns | 2,704 |
| nonzeros | 1,146,848 |
| structural full rank? | no |
| structural rank | 2,673 |
| # of blocks from dmperm | 5 |
| # strongly connected comp. | 32 |
| explicit zero entries | 4,384 |
| nonzero pattern symmetry | 0% |
| numeric value symmetry | 0% |
| type | real |
| structure | rectangular |
| Cholesky candidate? | no |
| positive definite? | no |
| author | V. Pereyra |
| editor | T. Davis |
| date | 2003 |
| kind | least squares problem |
| 2D/3D problem? | no |
| Ordering statistics: | AMD | METIS |
| nnz(V) for QR, upper bound nnz(L) for LU | 119,169,475 | 24,615,284 |
| nnz(R) for QR, upper bound nnz(U) for LU | 1,544,068 | 291,082 |
Note that all matrix statistics (except nonzero pattern symmetry) exclude the 4384 explicit zero entries.
Maintained by Tim Davis, last updated 05-Mar-2008.
Matrix pictures by cspy, a MATLAB function in the CSparse package.