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This dashboard visualizes COVID-19 vaccination data across US states, combining a choropleth-style map with an interactive bar chart. The map uses `d3.geoAlbersUsa` projections and `d3.geoPath` to render state boundaries, with circle sizes scaled by vaccination rates via `d3.forceSimulation` and `forceCollide` to prevent overlap. The lower bar chart displays daily doses for a selected state, using `d3.brushX` to let users select a date range. Data comes from a US vaccination dataset via CSV, with React managing state for dropdown selections and map updates.
AI-generated descriptionA dashboar showing COVID-19 Vaccination doses administered in the United States. The lower bar chart is the daily number of doses administered in the state selected by the dropdown. The map shows the number of daily doses administered in every state as of the latest data. By brushing the bottom barchart you can select the date for the map to visualize, with the circles representing the number of doses administered in each state on the date at the end of the selected date range.
This barchart has been revised to have non-overlapping circles and to resolve a glitch where circles were appended rather than updated
Data Source: US Vaccination Data by State/Territory