def adj_dst_index(self):
"""Return an EdgeIndex object for dst.
"""
if self._adj_dst_index is None:
v = self._edges[:, 0]
u = self._edges[:, 1]
self._adj_dst_index = EdgeIndex.from_edges(
u=u, v=v, num_nodes=self._num_nodes)
return self._adj_dst_index
def load(cls, path, mmap_mode="r"):
"""Load Graph from path and return a Graph in numpy.
Args:
path: The directory path of the stored Graph.
mmap_mode: Default :code:`mmap_mode="r"`. If not None, memory-map the graph.
"""
num_nodes = np.load(os.path.join(path, 'num_nodes.npy'),
mmap_mode=mmap_mode)
edges = np.load(os.path.join(path, 'edges.npy'), mmap_mode=mmap_mode)
num_graph = np.load(os.path.join(path, 'num_graph.npy'),
mmap_mode=mmap_mode)
if os.path.exists(os.path.join(path, 'graph_node_index.npy')):
graph_node_index = np.load(os.path.join(path,
'graph_node_index.npy'),
mmap_mode=mmap_mode)
else:
graph_node_index = None
if os.path.exists(os.path.join(path, 'graph_edge_index.npy')):
graph_edge_index = np.load(os.path.join(path,
'graph_edge_index.npy'),
mmap_mode=mmap_mode)
else:
graph_edge_index = None
if os.path.isdir(os.path.join(path, 'adj_src')):
adj_src_index = EdgeIndex.load(os.path.join(path, 'adj_src'),
mmap_mode=mmap_mode)
else:
adj_src_index = None
if os.path.isdir(os.path.join(path, 'adj_dst')):
adj_dst_index = EdgeIndex.load(os.path.join(path, 'adj_dst'),
mmap_mode=mmap_mode)
else:
adj_dst_index = None
def _load_feat(feat_path):
"""Load features from .npy file.
"""
feat = {}
if os.path.isdir(feat_path):
for feat_name in os.listdir(feat_path):
feat[os.path.splitext(feat_name)[0]] = np.load(
os.path.join(feat_path, feat_name),
mmap_mode=mmap_mode)
return feat
node_feat = _load_feat(os.path.join(path, 'node_feat'))
edge_feat = _load_feat(os.path.join(path, 'edge_feat'))
return cls(edges=edges,
num_nodes=num_nodes,
node_feat=node_feat,
edge_feat=edge_feat,
adj_src_index=adj_src_index,
adj_dst_index=adj_dst_index,
_num_graph=num_graph,
_graph_node_index=graph_node_index,
_graph_edge_index=graph_edge_index)