### Navigation

- index
- modules |
- next |
- previous |
- SciPy v0.7 Reference Guide (DRAFT) »
- Signal processing (`scipy.signal`) »

# scipy.signal.unique_roots

`scipy.signal.``unique_roots`(p, tol=0.001, rtype='min')

  Determine the unique roots and their multiplicities in two lists

  Inputs:

  > p – The list of roots tol — The tolerance for two roots to be considered equal. rtype — How to determine the returned root from the close

  > > ones: ‘max’: pick the maximum
  > >   ‘min’: pick the minimum ‘avg’: average roots

  Outputs: (pout, mult)

  > pout – The list of sorted roots mult – The multiplicity of each root

### Navigation

- index
- modules |
- next |
- previous |
- SciPy v0.7 Reference Guide (DRAFT) »
- Signal processing (`scipy.signal`) »