{"version":"1.0","type":"rich","title":"Covid-19 Choropleth Map of China","description":"A choropleth map of China displays cumulative confirmed COVID-19 cases per city as of June 21, 2020, with a logarithmic orange color scale and gray for missing data. The map uses `d3.geoMercator` projection and `d3.geoPath` to render city boundaries from a TopoJSON basemap, while case counts come from a CSV joined to city names. Colors are assigned via `d3.scaleLog` with `interpolateOranges`, and a legend is rendered with the d3-legend library. Data is sourced from the China Data Lab COVID-19 daily cases dataset.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/63e72fcf82b14b379b58a6b9ec36692f?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}