scipy.ndimage.interpolation.spline_filter1d

scipy.ndimage.interpolation.spline_filter1d(input, order=3, axis=-1, output=<type 'numpy.float64'>)

Calculates a one-dimensional spline filter along the given axis.

The lines of the array along the given axis are filtered by a spline filter. The order of the spline must be >= 2 and <= 5.

Parameters:

input : array_like

The input array.

order : int, optional

The order of the spline, default is 3.

axis : int, optional

The axis along which the spline filter is applied. Default is the last axis.

output : ndarray or dtype, optional

The array in which to place the output, or the dtype of the returned array. Default is numpy.float64.

Returns:

spline_filter1d : ndarray or None

The filtered input. If output is given as a parameter, None is returned.