Levels of detail: Difference between revisions

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'''Examples:'''
'''Examples:'''
<gallery>
<gallery>
MesoLevelExample.png|Meso level example
MesoLevelExample.png|Meso level example (© InfraBel)
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</gallery>
== Macro ==
== Macro ==
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'''Examples:'''
'''Examples:'''
<gallery>
<gallery>
MacroLevelExample.png|Macro level example
MacroLevelExample.png|Macro level example (© InfraBel)
MacroLevelExample_Station.png|Macro level example: station
MacroLevelExample_Station.png|Macro level example: station (© InfraBel)
MacroLevelExample_Line.png|Macro level example: Košice-Vienna broad gauge line project
MacroLevelExample_Line.png|Macro level example: Košice-Vienna broad gauge line project (From Wikimedia Commons)
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</gallery>
== Navigability ==
== Navigability ==

Revision as of 11:58, 1 April 2016

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Nano

The Nano description level identifies what happens inside a switch or crossing. It is where the distinction may be made between different types of switches.
Typically, this level will be built starting from the micro level, by using “switch templates”.

Examples:

Micro

This level defines the network in the nearest way to the physical level as commonly viewed.
Its nonlinear elements are the switch points, the network borders, maybe some administrative points (ownership boundaries), buffer stops, while its linear elements are the tracks connecting those NonLinear Elements. The linear elements will be called ‘track edges’.

Examples:

Meso

The Meso level brings the description of the tracks between the operational points of the network into focus.
Its NonLinear Elements are the operational points (OP; e.g. stations, yards, boundaries) and its linear elements are the tracks connecting those elements, which will be called SectionOfTracks.

Examples:

Macro

The Macro level aims to describe the network at regional or national level, with the NonLinear elements being the boundaries and the major OP’s while the linear elements are the section of lines connecting those points.

Examples:

Navigability

The network carries the information on how the railway network behaves as a mathematical network allowing routing operations. Navigability views are required for every level used for routing calculations. Because higher levels view can be computed by aggregation, only the lowest level view has to be explicitly defined.
However, when transmitting routing data for a single level, the navigability view for this level has to be known by all participants of the transmission.

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