{"version":"1.0","type":"rich","title":"Covid Cases in the US","description":"This visualization shows the geographic spread of confirmed COVID-19 cases across US counties over time, with each county filled according to case counts on a selected date. The map uses an Albers USA projection and renders counties as SVG paths via `d3.geoPath` and TopoJSON. A time slider and play button allow users to animate through the date range, with colors interpolated from a threshold scale using `d3.interpolateReds`. Data comes from a CSV file containing cumulative case counts per county from January to July 2020.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/2142527cf149469a91e4c3fecc309429?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}