pysteps.utils.tapering.compute_window_function

pysteps.utils.tapering.compute_window_function#

pysteps.utils.tapering.compute_window_function(m, n, func, **kwargs)#

Compute window function for a two-dimensional rectangular region. Window function-specific parameters are given as keyword arguments.

Parameters:
  • m (int) – Height of the array.

  • n (int) – Width of the array.

  • func (str) – The name of the window function. The currently implemented functions are ‘hann’ and ‘tukey’.

  • alpha (float) – Applicable if func is ‘tukey’.

Notes

Two-dimensional tapering weights are computed from one-dimensional window functions using w(r), where r is the distance from the center of the region.

Returns:

out – Array of shape (m, n) containing the tapering weights.

Return type:

array