def indexMap(self):
"{label -> location}"
if self._indexMap is None:
self._indexMap = _tseries.map_indices_buf(self)
self._verify_integrity()
return self._indexMap
def _read_panel_table(self, group, where=None):
from pandas.core.common import _asarray_tuplesafe
table = getattr(group, 'table')
# create the selection
sel = Selection(table, where)
sel.select()
fields = table._v_attrs.fields
columns = _maybe_convert(sel.values['column'],
table._v_attrs.columns_kind)
index = _maybe_convert(sel.values['index'],
table._v_attrs.index_kind)
# reconstruct
long_index = MultiIndex.from_arrays([index, columns])
lp = LongPanel(sel.values['values'], index=long_index,
columns=fields)
if lp.consistent:
lp = lp.sortlevel(level=0)
wp = lp.to_wide()
else:
if not self._quiet:
print ('Duplicate entries in table, taking most recently '
'appended')
# need a better algorithm
tuple_index = long_index.get_tuple_index()
index_map = _tseries.map_indices_buf(tuple_index)
unique_tuples = _tseries.fast_unique(tuple_index)
unique_tuples = _asarray_tuplesafe(unique_tuples)
indexer, _ = _tseries.getMergeVec(unique_tuples, index_map)
new_index = long_index.take(indexer)
new_values = lp.values.take(indexer, axis=0)
lp = LongPanel(new_values, index=new_index, columns=lp.columns)
wp = lp.to_wide()
if sel.column_filter:
new_minor = sorted(set(wp.minor_axis) & sel.column_filter)
wp = wp.reindex(minor=new_minor)
return wp
def indexMap(self):
if self._indexMap is None:
self._indexMap = _tseries.map_indices_buf(self)
self._verify_integrity()
return self._indexMap
