def view_eid(self, u=None):
"""Return the compressed edge id for given u.
"""
if u is None:
return np.split(self._sorted_eid, self._indptr[1:])
else:
u = np.array(u, dtype="int64")
return graph_kernel.slice_by_index(self._sorted_eid,
self._indptr,
index=u)
def view_v(self, u=None):
"""Return the compressed v for given u.
"""
if self._is_tensor:
raise NotImplementedError("not implemented!")
else:
if u is None:
return np.split(self._sorted_v, self._indptr[1:-1])
else:
u = np.array(u, dtype="int64")
return graph_kernel.slice_by_index(self._sorted_v,
self._indptr,
index=u)