{"version":"1.0","type":"rich","title":"Heatmap","description":"This heatmap visualizes U.S. unemployment rates across states and years, using a color scale from light gray to red to indicate low to high rates. It renders an SVG via D3.js (v7), with scales and axes built using `d3.scaleBand` and `d3.axisBottom`/`d3.axisLeft`, and colors assigned through `d3.scaleLinear`. Data loads from a CSV file using `d3.csv`. It includes axis labels, a legend, and a title, but no tooltips or interactivity beyond static rendering.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/3a79eb65c0574e7eb768f1503779130b?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}