{"version":"1.0","type":"rich","title":"Bubble Chart working tree","description":"A bubble chart visualizes San Francisco Fire Department call incidents from December 2016, encoding nine call types as circles whose areas represent counts. The chart uses D3 v3’s `d3.layout.pack` to position non-overlapping bubbles, with an ordinal color scale mapping each call type to a distinct pastel hue. Hovering a bubble reveals its exact count via a tooltip, while labels appear on larger categories. The visualization includes a legend and derives its data from a CSV file containing call type and frequency counts.","provider_name":"VizHub AI Studio","provider_url":"https://next.vizhub.com","html":"<iframe src=\"https://next.vizhub.com/viz/gist-cfa726e056ed4a4fb20c77c5f0c39c53?mode=embed\" width=\"960\" height=\"960\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":960,"cache_age":3600}