{"version":"1.0","type":"rich","title":"GR","description":"This interactive map overlays four geographic layers for Grand Rapids, Michigan: city commission wards, neighborhoods, neighborhood associations, and population data by block. Each layer uses Leaflet’s `L.geoJSON` to render GeoJSON data, with D3’s `d3.json` fetching the files from GitHub Gists. Wards are colored with fixed hues, while neighborhoods and associations use a custom `randomRGB` function to generate varied colors. A Leaflet layer control toggles visibility for each set, with popups showing ward numbers, neighborhood names, association names, and resident counts.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/39e86c61b42a468cbf98389cb1f09c90?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}