- Home
-
Public Sector
Public Sector
Quick links to popular content
- Business
-
Leisure
Leisure
OS getamap – print your route
Have your map custom made
Visit our shop
Read our magazine
-
Education & Research
Education & Research
Schools
Further & Higher Education
Research
General interest
-
About us
About us
Quick links
- Support
Relating ITN data to other OS MasterMap layers and third-party data
The ability to display and interrogate road and path network features of MasterMap® Integrated Transport Network™ (ITN) Layer in the context of the underlying topographic, administrative and address data, provides a better understanding of the spatial relationships that exist between those features and the real world objects they represent.
With GIS application software, OS MasterMap Topographic Layer, Address Layer 2 and ITN data may be displayed together, as shown here, for further analysis.
Relating OS MasterMap layers
OS MasterMap layers can be related to each other as they share common coordinate systems and context. The TOID attribute of each ITN road and path feature provides a unique identifier to establish a link between related features in different OS MasterMap layers and features in other datasets.
Each ITN RoadLink and PathLink feature is also attributed with the TOID of the underlying Topography Layer road or path feature they fall within.
Note: The attribute names shown here may not match the names assigned to the ITN data by your application software
This relationship between different OS MasterMap layers based on a common attribute may be used to answer queries such as '..show me the RoadLink features related to my selected addresses'.
The ability to relate the various OS MasterMap layers, and any third-party data that includes the same unique TOID attribute, provides the framework to support detailed spatial analysis of the combined datasets.
In the following scenario, a water utility company receives a number of calls from customers complaining about a lack of water pressure at their homes. Using the address information supplied, cross-referenced to OS MasterMap Address Layer 2, the section of the water supply network that may be at fault is located.
A field engineer working nearby is reassigned to the incident. Using the ITN network and routing information, the quickest route to the incident is calculated and forwarded to the engineer.
Once the repair has been completed and a work report submitted, a review of the incident is undertaken to consider if any further action is required. This review will take into account any other reported incidents concerning the same section of pipeline. Using a combination of the utility company's own asset data combined with the Topographic Layer and Address Layer 2, all the relevant information is made available to a planning engineer for review.
This is just one example of how the relationships between the various OS MasterMap layers and a customer's own data may be exploited to derive the information necessary to support, in this case, asset maintenance, service provision and resource management.
Case Studies
A number of case studies on our web site also illustrate some of the ways our customers have related ITN data to other OS MasterMap layers and their own data to help improve service delivery or streamline business operations. These case studies include:
Optimising school transportation routes in East Riding of Yorkshire Council – identifying school catchment areas and optimising safe journeys to work using both ITN and Topography Layers.
Scottish Road Works Register (SRWR) – developing the SRWR to relate Road features defined in the Topographic Layer to ITN RoadLink features to take advantage of routing information for identifying potential conflicts, congested road sections and developing alternative routes for road users.
Improving grounds maintenance services at Lee Valley Regional Park – relating ITN path network data, park furniture inventories and building asset databases to calculate payments for a grounds maintenance contract.