Street network of Chicago

Directed street network of Chicago.First line contains network metadata.Following 79824 lines contain geographical coordinates of nodes, with line i containing coordinates of node with id i-2.Remaining lines contain information about the edges, with each line containing id of predecessor, id of successor, length of the edge in meters, and type of the street.

芝加哥定向街道网络。首行包含该网络的元数据。后续共79824行内容为节点的地理坐标，其中第i行对应ID为i-2的节点的坐标。剩余行均存储边的相关信息，每一行依次包含前驱节点ID、后继节点ID、以米为单位的边长度以及街道类型。