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Merge pull request #1701 from pijyoi/fix_overflow_warning

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avoid numpy scalar overflow
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Ogi Moore 2021-04-08 21:54:23 -07:00 committed by GitHub
commit 10d924818c
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1 changed files with 3 additions and 1 deletions
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pyqtgraph/functions.py
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@ -1046,7 +1046,9 @@ def _rescaleData_nditer(data_in, scale, offset, work_dtype, out_dtype, clip):
# casting to an int32 will lose the fractional part, therefore the
# output dtype must be an integer kind.
lim_in = np.iinfo(data_in.dtype)
dst_bounds = scale * (lim_in.min - offset), scale * (lim_in.max - offset)
# convert numpy scalar to python scalar to avoid overflow warnings
lo = offset.item(0) if isinstance(offset, np.number) else offset
dst_bounds = scale * (lim_in.min - lo), scale * (lim_in.max - lo)
if dst_bounds[1] < dst_bounds[0]:
dst_bounds = dst_bounds[1], dst_bounds[0]
lim32 = np.iinfo(np.int32)