{"version":"1.0","type":"rich","title":"Time-Series Chart","description":"This time-series chart displays San Francisco’s community-wide greenhouse gas emissions from 1990 onward, grouped by sector (such as Buildings, Transportation, and Municipal) with each trend drawn as a separate colored line. Data is aggregated by summing the Emissions_mtCO2e column by sector and year from a CSV file. The visualization uses D3 v7’s `d3.rollups`, `d3.scaleLinear`, and `d3.line` with monotone X interpolation, while color comes from the ColorBrewer Set2 palette via `d3.scaleOrdinal`. An interactive tooltip, built with D3’s selection API, appears on mouse events but is not configured to follow the mouse.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/da930104ac704b5db84f3379ac75b326?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}