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Feature types and attributes in the Path Routing Information theme
Go to: PathNodeInformation | PathLinkInformation | PathRouteInformation | PathPartialLinkInformation | PathPartialRouteInformation | changeHistory attributes
In OS MasterMap® Integrated Transport Network™ Layer (ITN) features are classified using feature type and feature description attributes. This section describes the feature types in Path Routing Information, illustrates their permitted attribution and shows the expected occurrence of the attributes for each feature type in the data. These occurrences are shown in UML notation; 0 for optional, 1 for a single, * for multiple, and ‘or’ being represented by double dots (..).
Path Routing Information (PRI) describes features that restrict or allow movement across the Urban Paths network. The PRI model can also be used to describe features of interest, such as bollards or steps.
As with RRI, PRI features are captured as one of five types:
- PathNodeInformation – coincident with an intersection of network lines
- PathLinkInformation – to a PathLink regardless of direction of travel
- PathRouteInformation – along a PathLink or link(s) in a specific direction
- PathPartialLinkInformation – along part of a PathLink, regardless of direction of travel
- PathPartialRouteInformation – along part of a PathLink in a specified direction.
Each information feature type also has three qualifier attributes. The Urban Path Network uses parts of the existing Road Network data model for these.
|
General feature type: Path Routing Information |
||||
|
Attribute |
Cardinality |
Type |
Mandatory |
Notes |
|
TOID |
1 |
Identifier |
Yes |
|
|
version |
1 |
Integer |
Yes |
|
|
versionDate |
1 |
Date |
Yes |
|
|
theme |
1 |
Fixed String |
Yes |
’Path Routing Information’ |
|
descriptiveGroup |
1 |
Fixed String |
Yes |
’Path Routing Information’ |
|
changeHistory |
0..* |
Complex |
No |
|
|
dateTimeQualifier |
0..* |
Period |
No |
dateTimeQualifier values |
|
vehicleQualifier |
0..* |
(varies) |
No |
vehicleQualifier values Width, length and weight restrictions are not found in the urban path network. Height restrictions may be indicated and are therefore included in the model. |
|
environmentQualifier |
1..* |
(varies) |
No |
environmentQualifier values |
PathNodeInformation
PathNodeInformation is information that may influence a pedestrian’s choice of route and that applies to a PathNode feature in the network. These features are not populated in the first release of the product but will include items such as 'Pedestrian Crossings'. These features can reference either a PathNode or a ConnectingNode.
|
Feature type: PathNodeInformation |
||||
|
Attribute |
Cardinality |
Type |
Mandatory |
Notes |
|
TOID |
1 |
Identifier |
Yes |
|
|
version |
1 |
Integer |
Yes |
|
|
versionDate |
1 |
Date |
Yes |
|
|
theme |
1 |
Fixed String |
Yes |
’Path Routing Information’ |
|
descriptiveGroup |
1 |
Fixed String |
Yes |
’Path Routing Information’ |
|
changeHistory |
0..* |
Complex |
No |
|
|
Association |
Cardinality |
Type |
Mandatory |
Notes |
|
referenceToNode |
1 |
TOID link to node |
Yes |
A reference to the PathNode or ConnectingNode this information relates to. |
PathLinkInformation
PathLinkInformation is information that may influence a pedestrian's choice of route but not adversely prohibit their route; these features are predominantly steps, footbridges and cycle paths. This information applies to a single PathLink feature in both directions of travel and relates to a whole PathLink, a point on a PathLink or a section of a PathLink. These features can have a subsection indicated by the distance from the start and end point, but in most instances will reference the whole feature. These features do not have a direction.
Examples of restrictions potentially applying to an entire link could be access limitations such as ‘step’ or ‘subways’ along a RoadLink.
|
Feature type: PathLinkInformation |
||||
|
Attribute |
Cardinality |
Type |
Mandatory |
Notes |
|
TOID |
1 |
Identifier |
Yes |
|
|
version |
1 |
Integer |
Yes |
|
|
versionDate |
1 |
Date |
Yes |
|
|
theme |
1 |
Fixed String |
Yes |
’Path Routing Information’ |
|
descriptiveGroup |
1 |
Fixed String |
Yes |
’Path Routing Information’ |
|
changeHistory |
0..* |
Complex |
No |
|
|
distanceFromStart |
0..1 |
Real |
No |
If relevant and available, the distance from the start of the PathLink feature, in metres. |
|
point |
0..1 |
Point |
No |
If relevant and available, the location or the end point of the section (coincident with a vertex on the PathLink). |
|
Association |
Cardinality |
Type |
Mandatory |
|
|
referenceToPathLink |
1 |
TOID reference to link |
yes |
A reference to the PathLink that this connects to. |
PathRouteInformation
Information that may influence a pedestrian's choice of route and that applies to one or more PathLink features in a specified direction of travel. This feature can have a distance from the start but can also relate to the whole section of path. There is also an orientation that informs the direction the PathRouteInformation feature applies, for example, in a + or – direction either with or against the direction of digitisation of the PathLink it refers to.
Where the information applies to several links, distanceFromStart and point are not populated. Where the information applies to a specific point, both the distanceFromStart and the point are populated.
Examples would include turn restrictions (which apply to multiple links), one-way paths (which affect a single link in a specified direction) and access restrictions that apply in one direction only.
Where location along a PathLink is relevant and available, this information is supplied as both National Grid coordinates and the distance along the PathLink from its start point.
|
Feature type: PathRouteInformation |
||||
|
Attribute |
Cardinality |
Type |
Mandatory |
Notes |
|
TOID |
1 |
Identifier |
Yes |
|
|
version |
1 |
Integer |
Yes |
|
|
versionDate |
1 |
Date |
Yes |
|
|
theme |
1 |
Fixed String |
Yes |
’Path Routing Information’ |
|
descriptiveGroup |
1 |
Fixed String |
Yes |
’Path Routing Information’ |
|
changeHistory |
0..* |
Complex |
No |
|
|
distanceFromStart |
0..1 |
Real |
No |
If relevant and available, the distance from the start of the PathLink, in metres. |
|
point |
0..1 |
Point |
No |
If relevant and available, the location or the end point of the section (coincident with a vertex on the PathLink). |
|
Association |
Cardinality |
Type |
Mandatory |
|
|
directedLink |
1..* |
TOID reference to links |
Yes |
An ordered set of directed references to the PathLink features this information applies to. |
|
Attribute of the directedNode association |
||||
|
orientation |
1 |
Sign |
Yes |
Indicates whether the restriction applies in the direction of the PathLink, or against it. |
PathPartialLinkInformation
PathPartialLinkInformation is information that may influence a pedestrian's choice of route and applies to a portion of a single PathLink feature in any direction of travel. An example would be an access restriction, such as subways, that may be used at specific times and only applies to ‘x’ amount of a PathLink.
Where the information applies to part of a link, the subsectionDistance values indicate the beginning and end of the section (measured from the start node of the associated PathLink), as do the subsectionPoint values.
Location along the PathLink is supplied as both National Grid coordinates and the distance along the PathLink, from its start point to the start and end of the section the information applies to.
These features do not exist in the first release of ITN Urban Paths.
|
Feature type: PathPartialLinkInformation |
||||
|
Attribute |
Cardinality |
Type |
Mandatory |
Notes |
|
TOID |
1 |
Identifier |
Yes |
|
|
version |
1 |
Integer |
Yes |
|
|
versionDate |
1 |
Date |
Yes |
|
|
theme |
1 |
Fixed String |
Yes |
’Path Routing Information’ |
|
descriptiveGroup |
1 |
Fixed String |
Yes |
’Path Routing Information’ |
|
changeHistory |
0..* |
Complex |
No |
|
|
descriptiveTerm |
0..* |
String |
No |
|
|
subsectionDistance |
2 |
Real |
Yes |
The distance in metres from the start of the PathLink to the feature. |
|
subsectionPoint |
2 |
Point |
Yes |
XY coordinate |
|
Association |
Cardinality |
Type |
Mandatory |
|
|
referenceToPathLink |
1 |
Reference to link |
Yes |
A reference to the PathLink that this connects to. |
PathPartialRouteInformation
PathPartialRouteInformation is information that may influence a pedestrian's choice of route and applies to a portion of a single PathLink feature in a specified direction of travel. These restrictions apply to a specific direction of traffic. An example would be an access restriction that applies to a portion of a PathLink.
Where the information applies to several links, subsectionDistance and subsectionPoint are not populated. Where the information applies to part of a link, the subsectionDistance values indicate the beginning and end of the section (measured from the start node of the associated PathLink), as do the subsectionPoint values.
Location along the PathLink is supplied as both National Grid coordinates and the distance along the PathLink, from its start point, to the start and end of the section the information applies to.
These features do not exist in the first release of ITN Urban Paths.
|
Feature type: PathPartialRouteInformation |
||||
|
Attribute |
Cardinality |
Type |
Mandatory |
Notes |
|
TOID |
1 |
Identifier |
Yes |
|
|
version |
1 |
Integer |
Yes |
|
|
versionDate |
1 |
Date |
Yes |
|
|
theme |
1 |
Fixed String |
Yes |
’Path Routing Information’ |
|
descriptiveGroup |
1 |
Fixed String |
Yes |
’Path Routing Information’ |
|
changeHistory |
0..* |
Complex |
No |
|
|
subsectionDistance |
2 |
Real |
Yes |
The distance in metres from the start of the PathLink to the feature. |
|
subsectionPoint |
2 |
Point |
Yes |
XY coordinate |
|
Association |
Cardinality |
Type |
Mandatory |
|
|
directedLink |
1 |
Reference to link |
Yes |
Directed reference to the PathLink feature this information applies to. |
|
Attribute of the directedLink association |
||||
|
orientation |
1 |
Sign |
Yes |
Indicates whether the restriction applies in the direction of the PathLink, or against it. |
changeHistory attributes
|
Feature type: PathPartialRouteInformation |
||||
|
Attribute |
Cardinality |
Type |
Mandatory |
Notes |
|
changeDate |
1 |
Date |
Yes |
The date a change was made to the feature by an editor. This date may not match the versionDate attribute. |
|
reasonForChange |
1 |
String |
Yes |
The reason for a change made to a feature. |
Note: The attributes of changeHistory are mandatory because if a change has been made to the data, a date and reason must be recorded.
In this section:
ITN Technical specification – home
ITN Road Routing Information (RRI) theme
ITN Path Routing Information (PRI) theme
Feature types and attribution in the Road Network theme
Feature types and attribution in the Road Routing Information theme
Feature types and attribution in the Urban Paths Network theme
Feature types and attribution in the Path Routing Information theme
Descriptions of ITN Layer attributes
Attribution checklists for the Road Network and Urban Paths Network themes
ITN attribute definitions and values
This web page is part of the technical specification for OS MasterMap® Integrated Transport Network™ Layer. For the terms that apply to use of this specification, refer to Purpose of this specification.