World map
Explore total vaccinations and people vaccinated by country, using absolute and proportional measures.
King's College London · MSc coursework · 2021
Global COVID-19 vaccination visualisation
Three interactive views of an early global vaccination dataset, built with D3.js and a Java data-processing pipeline.
Historical data — not current: these diagrams use an Our World in Data dataset downloaded with a cutoff of 9 March 2021. Each country displays its latest available record within that dataset, so some country values were reported before the cutoff date.
Research question: How did the global vaccine rollout differ between nations, and which countries had progressed furthest?
Country comparison
Switch between two measures and compare the vaccination totals reported across countries.
Leading nations
Compare the five leading countries with the remainder of the world using an interactive donut chart.
Data and implementation
The visualisations use a static 2021 snapshot from Our World in Data. Java and JSON.simple were used to parse, aggregate and calculate the derived JSON/CSV datasets; D3.js v4/v5, TopoJSON, HTML and CSS power the browser views.
The submitted report documents the wider analytical and iterative design process, including early bubble-map, scatterplot and Sankey concepts.