location

location

• description A location is a vertex that is associated with a specific location along a link. Locations may be used to represent places where activities occur (e.g., driveways and bus stops). Its attributes are nearly the same as those for a node, except that the location includes an associated link and node, with location specified as distance along the link from the node.
• path location.csv
• schema
  • missingValues ['NaN', '']
  • primaryKey ['loc_id']
  • foreignKeys
  • [1]
    • fields ['link_id']
    • reference
    • resource link
    • fields ['link_id']
  • [2]
    • fields ['ref_node_id']
    • reference
    • resource node
    • fields ['node_id']
  • fieldsMatch subset

name	type	description	constraints
loc_id	any	Primary key. Location ID.	{'required': True}
link_id	any	Required. Road Link ID. Foreign Key from Road_Link.	{'required': True}
ref_node_id	any	Required. The From node of the link. Foreign Key from Node.	{'required': True}
lr	number	Required. Linear Reference of the location, measured as distance in short_length units along the link from the reference node. If link_geometry exists, it is used. Otherwise, link geometry is assumed to be a crow-fly distance from A node to B node.	{'required': True, 'minimum': 0}
x_coord	number	Optional. Either provided, or derived from Link, Ref_Node and LR.
y_coord	number	Optional. Either provided, or derived from Link, Ref_Node and LR.
z_coord	number	Optional. Altitude in short_length units.
loc_type	string	Optional. What it represents (driveway, bus stop, etc.) OpenStreetMap map feature names are recommended.
zone_id	any	Optional. Foreign Key, Associated zone
gtfs_stop_id	string	Optional. Foreign Key to GTFS data. For bus stops and transit station entrances, provides a link to the General Transit Feed Specification.