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Vector Tiles

Vector Tiles reference layers in Icon Map Slicer are designed to overlay additional layers of styled vector tiles on the map, for example adding OpenRailwayMap layers.

OpenRailwayMap

The user provides the URL of a MapLibre JSON style file. This style is merged with the existing background style, adding the additional sources and layers as required.

Configuring for Overlays​

When preparing a style for use as a reference layer, it should be designed with overlaying in mind:

  • No background layers that could obscure the base map.
  • Minimal duplication of base map features to avoid visual clutter.
  • Colours, line widths, and opacities tuned for clear visibility over the background map.

Limitations​

Not all MapLibre style features may be supported in reference layers:

  • Sprites and certain advanced styling features may not be available.
  • Some interactive or dynamic styling options might not merge correctly with the base style.