{"version":"1.0","type":"rich","title":"Earthquake Choropleth Map","description":"A choropleth map of the United States visualizes the logarithm of total earthquake counts per state, using a sequential orange-red color scale to show frequency. The map is rendered as an SVG using d3.geoPath with a geoAlbersUsa projection and TopoJSON boundaries. A custom color legend maps threshold domains to d3.schemeOrRd[9], and mouseover interactions trigger tooltips displaying state details. The data is loaded via Promise.all from a CSV file and the states-10m TopoJSON dataset.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/857b5b259e6d4f32a47afda85186ee23?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}