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scipy.stats.gaussian_kde.

# set_bandwidth

gaussian_kde.set_bandwidth(bw_method=None)

  Compute the bandwidth factor with given method.

  The new bandwidth calculated after a call to `set_bandwidth` is used for subsequent evaluations of the estimated density.

  Parameters:
    bw_method str, scalar or callable, optional

      The method used to calculate the bandwidth factor. This can be ‘scott’, ‘silverman’, a scalar constant or a callable. If a scalar, this will be used directly as factor. If a callable, it should take a `gaussian_kde` instance as only parameter and return a scalar. If None (default), nothing happens; the current `covariance_factor` method is kept.

  Notes

  Added in version 0.11.

  Examples

      >>> import numpy as np
      >>> import scipy.stats as stats
      >>> x1 = np.array([-7, -5, 1, 4, 5.])
      >>> kde = stats.gaussian_kde(x1)
      >>> xs = np.linspace(-10, 10, num=50)
      >>> y1 = kde(xs)
      >>> kde.set_bandwidth(bw_method='silverman')
      >>> y2 = kde(xs)
      >>> kde.set_bandwidth(bw_method=kde.factor / 3.)
      >>> y3 = kde(xs)

      >>> import matplotlib.pyplot as plt
      >>> fig, ax = plt.subplots()
      >>> ax.plot(x1, np.full(x1.shape, 1 / (4. * x1.size)), 'bo',
      ...         label='Data points (rescaled)')
      >>> ax.plot(xs, y1, label='Scott (default)')
      >>> ax.plot(xs, y2, label='Silverman')
      >>> ax.plot(xs, y3, label='Const (1/3 * Silverman)')
      >>> ax.legend()
      >>> plt.show()