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DM-38973: Call to np.percentile in overscan.py leads to numpy warnings with 1.23 #259

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May 2, 2023
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DM-38973: Call to np.percentile in overscan.py leads to numpy warnings with 1.23 #259

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3 changes: 2 additions & 1 deletion python/lsst/ip/isr/overscan.py
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Original file line number Diff line number Diff line change
Expand Up @@ -617,7 +617,8 @@ def maskOutliers(self, imageArray):
maskedArray : `numpy.ma.masked_array`
Masked image marking outliers.
"""
lq, median, uq = np.percentile(imageArray, [25.0, 50.0, 75.0], axis=1)
lq, median, uq = np.percentile(np.ma.getdata(imageArray),
[25.0, 50.0, 75.0], axis=1)
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I was worried that this wouldn't work if it wasn't a masked array, but it does, so great!

axisMedians = median
axisStdev = 0.74*(uq - lq) # robust stdev

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