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BUG: handle equal thresholds in threshold_firm #881

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BUG: handle equal thresholds in threshold_firm #881

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4 changes: 4 additions & 0 deletions pywt/_thresholding.py
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Original file line number Diff line number Diff line change
Expand Up @@ -239,6 +239,10 @@ def threshold_firm(data, value_low, value_high):
"value_high must be greater than or equal to value_low.")

data = np.asarray(data)

if value_low == value_high:
return hard(data, value_low)

magnitude = np.absolute(data)
with np.errstate(divide='ignore', invalid='ignore'):
# divide by zero okay as np.inf values get clipped, so ignore warning.
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