{"version":"1.0","type":"rich","title":"Coronavirus Line Chart with Marker Line","description":"This visualization displays global COVID-19 death totals over time as a single bold line, with a horizontal marker line highlighting the one-million-death threshold. The React component uses d3.scaleTime and d3.scaleLinear to map dates and cumulative deaths to SVG coordinates, while d3.line generates the path. Data comes from the CSSEGISandData COVID-19 time-series CSV, loaded via d3.csv and aggregated daily. The marker line is a static SVG `<line>` positioned using the y-scale’s output for one million deaths.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/1b1639337a6e4cb9b6f83cbbe9ea64f2?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}