Mapbox keys for Berlin Maps
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CCliffordAnderson
Last edited Feb 5, 2015
Created on Feb 4, 2015
This example visualizes the evolution of map keys for Berlin from 1908 to 1970, showing how cartographic symbols and labels change over time. The visualization uses Mapbox GL JS to render the basemap and overlays historical map tiles from the gist, with a slider that triggers transitions between years. Each year’s tile layer is toggled using `map.setLayoutProperty` and `transition.attrTween` to fade between versions, while a D3 `d3.forceSimulation` positions a set of key labels and symbol annotations beside the map. The underlying data is sourced from the Vulibrary GIS library’s historical map files, and the rendering approach relies on Mapbox’s `addLayer` with custom raster sources for each dated tile set.
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