Locations of Datavis 2020 Students By Date
A world map plots the approximate locations of students who joined Datavis 2020, with each point colored by the week they joined. The visualization uses a natural Earth projection via `d3.geoNaturalEarth1` and `d3.geoPath` to render land masses, graticules, and country borders from TopoJSON data. Student locations, manually geocoded from Slack introductions, appear as circles sized and colored by a sequential Viridis scale based on join date. A color legend with date ticks helps interpret the temporal distribution.