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  2. RailTopoModel - Wikipedia

    en.wikipedia.org/wiki/RailTopoModel

    RailTopoModel is a systemic data model for describing the topology-based railway infrastructure as needed by various applications. The RailTopoModel has been initially developed under patronage of the International Union of Railways (UIC) and was released as International Railway Standard (IRS) 30100 in April 2016. [1]

  3. Atlas (topology) - Wikipedia

    en.wikipedia.org/wiki/Atlas_(topology)

    In mathematics, particularly topology, an atlas is a concept used to describe a manifold. An atlas consists of individual charts that, roughly speaking, describe individual regions of the manifold. In general, the notion of atlas underlies the formal definition of a manifold and related structures such as vector bundles and other fiber bundles .

  4. Atlas Model Railroad - Wikipedia

    en.wikipedia.org/wiki/Atlas_Model_Railroad

    In the early 1990s, the Atlas Tool Co. changed its name to Atlas Model Railroad Company, Inc. In 1997 Atlas O, LLC was established as a separate business entity dedicated to producing multiple lines of O scale model railroad products including track, freight cars, locomotives and accessories, co-founded and led by James J. Weaver.

  5. Topological map - Wikipedia

    en.wikipedia.org/wiki/Topological_map

    In cartography, geology, and robotics, [1] a topological map is a type of diagram that has been simplified so that only vital information remains and unnecessary detail has been removed. These maps lack scale, also distance and direction are subject to change and/or variation, but the topological relationship between points is maintained.

  6. List of rail transport modelling scale standards - Wikipedia

    en.wikipedia.org/wiki/List_of_rail_transport...

    In terms of model railway operation, gauge 3 is the largest (standard gauge) scenic railway modelling scale, using a scale of 13.5 mm to the foot. The Gauge '3' Society represents this aspect of 2 + 1 ⁄ 2 -inch gauge railway modelling with both electric and live steam operation.

  7. Wikipedia : Graphics Lab/Resources/Draw topological maps

    en.wikipedia.org/.../Resources/Draw_topological_maps

    The purpose of this tutorial is to show how to create a vector graphics topological map of a single rapid transit, tram, railway, waterway, road or long footpath, etc, route. Topological maps are straight-line diagrams or schematics that display not only the routes, but also other information such as stations and travel zones (as in the case of ...