def _indexing_func(self, pd_indexing_func):
"""Perform indexing on `Drawdowns`."""
new_wrapper, new_records_arr, _, col_idxs = \
Records._indexing_func_meta(self, pd_indexing_func)
new_ts = new_wrapper.wrap(self.ts.values[:, col_idxs], group_by=False)
return self.copy(wrapper=new_wrapper,
records_arr=new_records_arr,
ts=new_ts)
def _indexing_func_meta(self, pd_indexing_func):
"""Perform indexing on `Orders` and return metadata."""
new_wrapper, new_records_arr, group_idxs, col_idxs = \
Records._indexing_func_meta(self, pd_indexing_func)
new_close = new_wrapper.wrap(to_2d(self.close, raw=True)[:, col_idxs],
group_by=False)
return self.copy(wrapper=new_wrapper,
records_arr=new_records_arr,
close=new_close), group_idxs, col_idxs
