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Multiple Views with Fast Brushing

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CChongho Lee
Last edited Nov 18, 2019
Created on Nov 18, 2019

A world map and a time-series histogram show the locations and monthly totals of missing migrants. Users brush a time interval in the histogram, instantly filtering the map’s circles to reflect the selected range. Built with React hooks, the visualization uses `d3-geo`’s `geoNaturalEarth1` and `geoPath` for map projection, `d3.brushX` for interactive selection, and `d3.bin` with `timeMonths` for aggregating data. The map’s point radii derive from `d3.scaleSqrt`, with data sourced from the Missing Migrants Project and world boundaries from World Atlas TopoJSON.

AI-generated description

A world map showing cities with population greater than 50,000. City data from Simplemaps: World Cities Database.

Country boundaries from World Atlas TopoJSON, polished for visual style, including graticules.

This iteration is optimized for performance using React's useMemo hook.

MIT Licensed

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