Panel4D.sub(other, axis=0)

GroupBy.nth(n, dropna=None)

Series.dt.weekofyear The week ordinal of the year

MultiIndex.argmin(axis=None)

Series.resample(rule, how=None, axis=0, fill_method=None, closed=None, label=None, convention='start', kind=None, loffset=None, limit=None

TimedeltaIndex.is_numeric()

Index.is_boolean()

classmethod Panel.fromDict(data, intersect=False, orient='items', dtype=None)

Series.to_json(path_or_buf=None, orient=None, date_format='epoch', double_precision=10, force_ascii=True, date_unit='ms', default_handler=None

Panel4D.as_matrix()