Update spatial_filter.py

[dr-r-kan]

PR: Fixed indexing issue in the _channel_spatial_filter() which led to array setting error.

Issue was only occurring on some files, which were loaded from fifs, converted from edf imports. Now runs smoothly.

[vferat]

Hey @KishiBayes, thanks for opening this PR.

Could you provide a bit more details about the issue you encountered, and what this code change wants to achieve ?

From what I understand, there can be an issue in the current code version:

  max_mask = neighbors_data == np.amax(neighbors_data, keepdims=True, axis=0)
  min_mask = neighbors_data == np.amin(neighbors_data, keepdims=True, axis=0)
  keep_mask = ~(max_mask | min_mask)

where several neighbors can have a min/mask value and therefore removing more than 2 neighboring values, resulting in an error. Is that it ?

I may be wrong, please don't hesitate to let me know if it is the case.