Choropleth Map, COVID, Ohio
This choropleth map visualizes COVID-19 case counts across Ohio counties, using a yellow-to-red sequential color scale to encode the number of cases per county. The map renders SVG paths via `d3.geoPath` with a Natural Earth projection, drawing county boundaries from World Atlas TopoJSON and overlaying graticules and land features. React manages the component state, while D3 modules (`scaleSequential`, `schemeYlOrRd`, `csv`, `json`) load the data and compute the color mapping. The visualization shows case data from a CSV hosted on GitHub, with the color scale domains set dynamically based on the maximum case count.
AI-generated descriptionA world map of the Missing Migrants Dataset.
Each point in the plot represents a single event.
Country boundaries from World Atlas TopoJSON.