IS:switch

From wiki.railML.org
Jump to: navigation, search

switch
 


Scheme description / Schemenbeschreibung / Description du schéma

Position of switch in the XML-Tree / Position von switch im XML-Baum / position de switch dans l’aborescence XML

Multiplicity / Anzahl / Multiplicité

[0..∞]

Semantics / Bedeutung / Sémantique

A <switch> defines a standard railroad switch with three connections as an infrastructure element. A railroad switch, turnout or (set of) points is a mechanical installation enabling railway trains to be guided from one track to another, such as at a railway junction or where a spur or siding branches off a http://en.wikipedia.org/wiki/Railway_switch (external link).

Attributes of switch / Attribute von switch / Attributs de switch

  • id: XML-file-wide unique, machine-interpretable identity, required for later referencing that element internally. For a detailed explanation see Dev:identities.
    XML-Datei-weit eindeutige, maschineninterpretierbare Identität, die für die spätere interne Referenzierung dieses Elements erforderlich ist. Für eine detaillierte Erklärung siehe Dev:identities.
  • code (introduced with version 2.1): Machine-interpretable string (e.g. an abbreviation) used for identification of the object across exchange partners, usecase specific uniqueness constraints may apply.
    Maschineninterpretierbare Zeichenkette (z.B. Abkürzung), die zur Identifizierung des Objekts auch bei Austauschpartnern verwendet wird, wobei spezifische Eindeutigkeitsbeschränkungen gelten können.
  • name: Established, human-readable short string, giving the object a name. Usually not intended for machine interpretation.
    Etablierte, menschenlesbare kurze Zeichenkette, die das Objekt benennt. In der Regel nicht zur maschinellen Interpretation bestimmt.
  • description: Human-readable, more detailed description as addition to the name. It should give additional explanations or hints to the contents of this data set. Usually not intended for machine interpretation.
    Menschenlesbare, detailliertere Beschreibung als Ergänzung zu name. Sie soll zusätzliche Erläuterungen oder Hinweise auf den Inhalt dieses Datensatzes geben. In der Regel nicht zur maschinellen Interpretation bestimmt.
Birne.png Please be aware that this attribute is only intended to forward simple remarks/explanations from one end-user to another end-user. It is not to be used to contain computer-processable data, nor shall it be parsed by programmes in any way. In case of semantical overlaps or discrepancies to machine processable file contents, any machine processable contents have priority over possible human interpretable contents. However, the attribute may be used to transmit complementary details to machine processable parameters.

Bitte, berücksichtigen Sie, dass dieses Attribut nur für einfache Kommentare/Erklärungen von Endbenutzer zu Endbenutzer bestimmt ist. Es ist nicht für maschineninterpretierbare Daten gedacht und wird nicht geparst werden. Im Falle semantischer Überschneidungen oder Widersprüche zu maschinenlesbaren Inhalten wird diesen der Vorzug gegenüber durch Menschen lesbaren gegeben. Allerdings können durch Menschen lesbare Felder für Ergänzungen zu maschinenlesbaren verwendet werden.

  • xml:lang (introduced with version 2.1): This is a unique identifier of language. It uses basically the language standard IETF BCP 47 (external link) which may be different to ISO 639-1 (external link) or ISO 639-2 (external link). For mapping hints see relation to other standards (external link).
    This is used for defining name and description.
  • pos: This is the position on a track defined as distance from its start (trackBegin) regardless the "absolute mileage" in absPos.
    Das ist die Position des Elements auf einem Track i.S. der realen Entfernung zum trackBegin. Sie ist damit unabhängig von der mit absPos modellierten Strecken-Kilometrierung.
Note.png For an explanation of the differences between pos and abspos see <mileageChange>
  • absPos: This is the position on a track as absolute mileage/chainage.
    Das ist die Position des Elements im Referenzsystem der Strecken-Kilometrierung.
Note.png For an explanation of the differences between pos and abspos see <mileageChange>
  • absPosOffset (deprecated with version 2.1): The semantics of this attribute aren't very clear. It seems to be redundant to the definitions with mileageChanges in "overlapping regions".

Missinginformation.png In this article there is information missing with respect to the attributes trackContinueRadius, model and length. Please help improving the railML® wiki by filling the gaps. Possibly, you will find further details on the discussion pageFerri Leberl (talk) 16:50, 15 January 2017 (CET)
  • ocpStationRef: This refers to the id attribute of the associated <ocp> element.
    (introduced with version 2.1)
  • controllerRef: This refers to the id attribute of the associated <controller> element.
    (introduced with version 2.1)
  • trackContinueCourse Possible values are:
  • straight straight leg (no curve) of the switch
  • left left curved leg of switch
  • right right curved leg of switch
  • other:anything Any value that does not fit any value from the previous enumeration list, fulfilling the constraint: at minimum two characters, whitespace is not allowed.
  • trackContinueRadius
  • normalPosition Possible values are:
  • straight straight leg (no curve) of the switch
  • left left curved leg of switch
  • right right curved leg of switch
  • other:anything Any value that does not fit any value from the previous enumeration list, fulfilling the constraint: at minimum two characters, whitespace is not allowed.
  • model
  • length
  • type Possible values are:
  • ordinarySwitch An ordinary switch is a switch with a straight branch and a curved branch.
  • insideCurvedSwitch An inside curved switch has two curved branches directing in the same direction (either left or right) with one branch having a bigger radius than the other.
  • outsideCurvedSwitch An outside curved switch has two curved branches directing in different directions (left and right). The value of the radius may be similar with both branches.
  • threeWaySwitch A switch with three instead of two possible ways.
  • other:anything Any value that does not fit any value from the previous enumeration list, fulfilling the constraint: at minimum two characters, whitespace is not allowed.

Syntactic Constraints / Syntaktische Beschränkungen / Contraintes syntactiques

  • id: xs:ID, required
    a string, starting with a letter (a..zA..Z) or an underscore (_),
    followed by a non-colonized and non-spaced string consisting of letters, digits, points (.), dashes (-) or underscores (_)
  • pos: tLengthM (xs:decimal, 6 fraction digits, length value measured in meter); required; must be greater than or equal to zero, less than or equal to the track's length
  • absPos: xs:decimal, 6 fraction digits, length value measured in meter; optional
  • absPosOffset: xs:decimal, 6 fraction digits, length value measured in meter; optional


  • trackContinueCourse optional
  • trackContinueRadius optional
  • normalPosition optional
  • length optional
  • type: union of (restriction of xs:string, tOtherEnumerationValue); tOtherEnumerationValue is an arbitrary string starting with 'other:' followed by at minimum two characters, white space not allowed for extending railML enumeration lists; optional

Best practice & Examples / Empfohlene Anwendung & Beispiele / Bonnes pratiques & exemples

Not yet described. / Noch nicht beschrieben. / Pas encore décrit.

Notes / Anmerkungen / Notes

General information on positioning

Positive pos values describe the distance from the track's begin. The track length is derived from the pos value in <trackEnd>.

The absolute mileage refered to by absPos is usually found on technical drawings of the track layout or on mileage posts next to the track.

Open issues / Offene Punkte/Pedenzen / Questions ouvertes

Not yet described. / Noch nicht beschrieben. / Pas encore décrit.