r"""Compute implied time scales from given eigenvalues

    Parameters
    ----------
    evals : eigenvalues
    tau : lag time

    Returns
    -------
    ts : ndarray
        The implied time scales to the given eigenvalues, in the same order.

def timescales_from_eigenvalues(evals, tau=1):
    r"""Compute implied time scales from given eigenvalues

    Parameters
    ----------
    evals : eigenvalues
    tau : lag time

    Returns
    -------
    ts : ndarray
        The implied time scales to the given eigenvalues, in the same order.

    """

    """Check for dominant eigenvalues with large imaginary part"""

    if not np.allclose(evals.imag, 0.0):
        warnings.warn('Using eigenvalues with non-zero imaginary part', ImaginaryEigenValueWarning)

    """Check for multiple eigenvalues of magnitude one"""
    ind_abs_one = np.isclose(np.abs(evals), 1.0, rtol=0.0, atol=1e-14)
    if sum(ind_abs_one) > 1:
        warnings.warn('Multiple eigenvalues with magnitude one.', SpectralWarning)

    """Compute implied time scales"""
    ts = np.zeros(len(evals))

    """Eigenvalues of magnitude one imply infinite timescale"""
    ts[ind_abs_one] = np.inf

    """All other eigenvalues give rise to finite timescales"""
    ts[np.logical_not(ind_abs_one)] = \
        -1.0 * tau / np.log(np.abs(evals[np.logical_not(ind_abs_one)]))
    return ts