{"version":"1.0","type":"rich","title":"Kentucky Population Density","description":"This choropleth map shows population density for each county in Kentucky using a ColorBrewer sequential color scale. The visualization uses a threshold scale to map population per square mile into five color classes, with a legend key displayed in the upper-left corner. County boundaries are rendered as white lines, and the state border is drawn in dark gray. Hovering over a county reveals a tooltip with its name and density. The map is projected using Kentucky’s State Plane coordinate system, with data from the U.S. Atlas project. The choropleth uses per-county population and area attributes from a TopoJSON file to compute density, and a ColorBrewer color scheme encodes the values. The visualization was forked from Mike Bostock's block and uses D3 v3 with SVG rendering.","provider_name":"VizHub AI Studio","provider_url":"https://next.vizhub.com","html":"<iframe src=\"https://next.vizhub.com/viz/gist-cf3fe7b22e9bfbdc5bb08a5415fab211?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"1\"></iframe>","width":960,"height":500,"cache_age":3600}