{"version":"1.0","type":"rich","title":"Fork of Opacity Linear Scale","description":"This visualization shows the racial distribution of New York State census tracts, mapping the white population share using a green color scale where opacity varies linearly from fully transparent to fully opaque. The map uses `d3.geoPath` with TopoJSON data to render tract boundaries as SVG paths, while `d3.scaleLinear` maps each tract’s white population count to an rgba color string. Data comes from the American Community Survey via Mike Bostock’s census tract GeoJSON, with the color scale defined in code at lines 80–85.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/9bd4ad1c357244a7a80f6645f99b133a?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}