Mercurial > hg > numerics
view numerics/filters.py @ 190:72ae8c768504
update directory structure
author | Jeff Hammel <k0scist@gmail.com> |
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date | Thu, 03 Aug 2017 15:37:11 -0700 |
parents | c2f545f32025 |
children |
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""" filter functions for statistics """ from .conformity import ensure_row_lengths __all__ = ['mean', 'array_mean', 'median'] def mean(data): """return arithemetic mean of a vector""" return sum(data)/float(len(data)) def array_mean(data): if not data: return [] ensure_row_lengths(data) return [mean(i) for i in zip(*data)] def median(data): length = len(data) index = length/2 if length % 2: return data[index] else: return 0.5*(data[index-1] + data[index])