Flow chart for the spread of COVID-19 across the world
This visualization maps the global spread of COVID-19 during the early outbreak, showing direct transmission links between geographic coordinates. A Mercator projection with `d3.geoPath` renders country outlines, while an overlay of `LineString` paths connects origin and destination points, revealing propagation routes from Chinese provinces to Europe, Australia, and beyond. The code uses `d3.queue` with `d3.json` and `d3.csv` to load world GeoJSON and coordinate data, with `d3.geoMercator` projecting all coordinates. The resulting SVG uses a dark teal stroke for each transmission arc against a gray world map.
AI-generated descriptionThis visualisation was implemented to show the rate of spread between people in the early stages of the outbreak. as we can see the flow map .
From analysis we can see that the provinces china were the carriers of the virus to the rest of the world. which led to secondary travel to new places such as europe and australia to spread it further.