{"version":"1.0","type":"rich","title":"HeatMap","description":"This heatmap visualizes San Francisco municipal greenhouse gas emissions by commodity information across fiscal years 2020–2022, using color intensity to represent the total mtCO₂e per category per year. It reads emissions data from a CSV file, aggregates it with `d3.rollups` and `d3.sum`, and renders an SVG via `d3.scaleBand` for axes and `d3.scaleSequential` with an Orange-Red interpolator for the color gradient. Hovering a cell displays a tooltip with commodity, year, and formatted emissions value.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/b40c50b6965e4ca18053726b3277af76?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}