{"version":"1.0","type":"rich","title":"Assignment 7 Heat Map with Tooltips","description":"This heat map visualizes average monthly prices for four leafy greens—spinach, cress, mustard, and fennel—using a sequential green color scale to encode price levels, with a d3-legend color bar and interactive tooltips that display exact prices on hover. The visualization is built with D3 v6, using SVG rendering and scales such as `d3.scaleBand` for the x (date) and y (commodity) axes, while `d3.scaleSequential` with `d3.interpolateBuGn` drives the color encoding. Data is loaded from a CSV file via `d3.csv`, filtered to include only the specified commodities, and rendered as rects with hover events for tooltip feedback.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/035c2dbd82154277b975da690b5b7bcf?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}