Relative Elevation Nodes Point Coordinate system: 4326 Abstract: This layer indicates the relative elevations of transportation nodes. It outlines relationships between street segments on different planes via node-and-segment connectivity (e.g. 0 for surface, -1 for an underpass, and 1 for an overpass). Relative Elevation Nodes (REN) are a work-around for inherent limitations when navigating through three-dimensional street networks represented on the two-dimensional plane (i.e. computer screen). REN help to establish routing options and are particularly useful where complex overpass/underpass structures exist because they indicate street segments as being on different road-levels; where on the computer screen all streets appear to be connected. Additional tables and supporting documentation are available in the Data Dictionary and User Manual.

Additional Documentation

• Metadata Information

  Language: eng; CAN

  Last Update: 2023-11-08

  Metadata Contact:

  Scholars Portal, Ontario Council of University Libraries Toronto Ontario, Canada

  http://scholarsportal.info

  Contact Instructions:

  datagis@scholarsportal.info

  Metadata Standard:

  ISO 19115-2

• Citation Information

  
  
  

  Series

  Name: CanMap Content Suite

  
  

  DMTI Spatial Inc. Markham Ontario, Canada

  Themes or Categories of the Resource: transportation

  Keywords:

  Turn Restriction, Elevation, Relative Elevation, Node, Intersection, Dangle, Dead End, Road Levels, Connectivity, 3D, Overpass, Underpass, Latitued, Longitude

  Road networks, Réseau routier

  Place Keywords:

  Continent > North America > Canada

  Dataset Language: eng; CAN

  Status: completed

  Update Frequency: quarterly

  Spatial Representation Type: vector

  Processing Environment:

  Windows 10 Enterprise Version 22H2 (Build 19045.2604) Windows feature experience pack 120.2212.4190.0; Esri ArcGIS 10.6.1s

  Extent

  West Longitude: -141.001449

  East Longitude: -52.623656

  North Latitude: 82.514468

  South Latitude: 41.436108

  
  

  Supplemental Information:

• Spatial Representation - Vector

  Geometric Objects:

  Object Type: point

• Reference System Information

  Reference System Identifier

  Value: 4326

  Code Space: https://www.epsg.org/
• 
  

• Distribution Information

  Distributor:

  DMTI Spatial Inc. Markham Ontario, Canada