• UF Sparse Matrix Collection

    UF Sparse Matrix Collection: ATandT group.

  • Click here for a description of the ATandT group.
  • Click here for a list of all matrix groups.
  • Click here for a list of all matrices.

    matrix graph Group/Name id download # rows # cols nonzeros type sym spd?
    ATandT/onetone1 ATandT/onetone1 ATandT/onetone1 283 MAT, MM, RB 36,057 36,057 335,552 real unsymmetric 4% no
    ATandT/onetone2 ATandT/onetone2 ATandT/onetone2 284 MAT, MM, RB 36,057 36,057 222,596 real unsymmetric 7% no
    ATandT/pre2 ATandT/pre2 ATandT/pre2 285 MAT, MM, RB 659,033 659,033 5,834,044 real unsymmetric 7% no
    ATandT/twotone ATandT/twotone ATandT/twotone 286 MAT, MM, RB 120,750 120,750 1,206,265 real unsymmetric 11% no

    Maintained by Tim Davis, last updated 10-Jun-2015.
    Matrix pictures by cspy, a MATLAB function in the CSparse package.
    See UFget to download directly into MATLAB.