RTM:linearPositioningSystem

Introduction

See linear positioning system in RailTopoModel^®'s wiki.

Documentation

Syntax

Autoexport from the XML-Schema for element RTM:linearPositioningSystem of railML® version 3.3 UML-visualization of RTM
Documentation	Linear positioning systems work in one dimension. They are a typical way to specifiy the location of an entity on a railway. The one given coordinate for an entity in a linear positioning system positions the entity following the layout of the track.
Subschema	Rtm4railml
Parents*	linearPositioningSystems
Children	anchor (0..*), isValid (1..*), name (0..*)
Attributes: endMeasure: last value in the direction on mileage of the line (at its end) associated with the enclosing linear positioning system (obligatory; xs:double), linearReferencingMethod: specifies a way of how the coordinates were determined (obligatory; xs:string) Possible values: absolute: mileage i.e. distance from beginning of a line interpolation: determine location by interpolating between two known locations along a route. relative: relative to some point on a line, not a beginning of a line, startMeasure: first value in the direction on mileage of the line (at its beginning) associated with the enclosing linear positioning system (obligatory; xs:double), units: use SI units (e.g. metres) whenever possible (obligatory; xs:string; patterns: other:w{2,}) Possible values: metres miles, id: the identifier of the object; this can be either of type xs:ID or UUID (obligatory; xs:ID); compare: Dev:Identities
*Notice: Elements may have different parent elements. As a consequence they may be used in different contexts. Please, consider this as well as a user of this wiki as when developing this documentation further. Aspects that are only relevant with respect to one of several parents should be explained exclusively in the documentation of the respective parent element.

Autoexport from the XML-Schema for element RTM:linearPositioningSystem of railML® version 3.2 UML-visualization of RTM
Documentation	Localization expressed in a linear reference system, generally a coordinate along a predefined axis.
Subschema	Rtm4railml
Parents*	linearPositioningSystems
Children	anchor (0..*), isValid (1..*), name (0..*)
Attributes: endMeasure: last value in the direction on mileage of the line (at its end) associated with the enclosing linear positioning system (obligatory; xs:double), linearReferencingMethod: specifies a way of how the coordinates were determined (obligatory; xs:string) Possible values: absolute interpolation relative, startMeasure: first value in the direction on mileage of the line (at its beginning) associated with the enclosing linear positioning system (obligatory; xs:double), units: use SI units (e.g. metres) whenever possible (obligatory; xs:string), id: the identifier of the object; this can be either of type xs:ID or UUID (obligatory; xs:string; patterns: (urn:uuid:)?[0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{12}|{[0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{12}}); compare: Dev:Identities
*Notice: Elements may have different parent elements. As a consequence they may be used in different contexts. Please, consider this as well as a user of this wiki as when developing this documentation further. Aspects that are only relevant with respect to one of several parents should be explained exclusively in the documentation of the respective parent element.

Autoexport from the XML-Schema for element RTM:linearPositioningSystem of railML® version 3.1 UML-visualization of RTM
Documentation	This element is not documented in the schema!
Subschema	Rtm4railml
Parents*	linearPositioningSystems
Children	anchor (0..*), isValid (1..*), name (0..*)
Attributes: linearReferencingMethod: This attribute is not documented in the schema! (obligatory; xs:string) Possible values: interpolation relative absolute, startMeasure: This attribute is not documented in the schema! (obligatory; xs:double), endMeasure: This attribute is not documented in the schema! (obligatory; xs:double), units: use SI units (e.g. metres) whenever possible (obligatory; xs:string), id: the identifier of the object; this can be either of type xs:ID or UUID (obligatory; xs:ID; patterns: (urn:uuid:)?[0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{12}|{[0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{12}}); compare: Dev:Identities
*Notice: Elements may have different parent elements. As a consequence they may be used in different contexts. Please, consider this as well as a user of this wiki as when developing this documentation further. Aspects that are only relevant with respect to one of several parents should be explained exclusively in the documentation of the respective parent element.

Changes 3.1→3.2

There exists an overview of all changes between railML^® 3.1 and railML^® 3.2 on page Dev:Changes/3.2.

The element documentation has been changed.

The children have been changed.

The attributes have been changed.

Changes 3.2→3.3

There exists an overview of all changes between railML^® 3.2 and railML^® 3.3 on page Dev:Changes/3.3.

The element documentation has been changed.

The attributes have been changed.

Semantics

Proposed Semantic Constraint "IS:014":   @startMeasure and @endMeasure are start and end values of a railway <IS:line> associated with <RTM:linearPositioningSystem> not max and min values of a current file with e.g. line section   Proposed on April 08th 2024 Discuss this semantic constraint Please, recognize our guidelines on semantic constraints