### Navigation

- index
- modules |
- modules |
- next |
- previous |
- NumPy v1.5 Manual (DRAFT) »
- NumPy Reference »
- Routines »
- Polynomials »

# numpy.RankWarning

exception `numpy.``RankWarning`

  Issued by polyfit when the Vandermonde matrix is rank deficient.

  For more information, a way to suppress the warning, and an example of RankWarning being issued, see polyfit.

### Navigation

- index
- modules |
- modules |
- next |
- previous |
- NumPy v1.5 Manual (DRAFT) »
- NumPy Reference »
- Routines »
- Polynomials »