{"version":"1.0","type":"rich","title":"A7- Heatmap","description":"This heatmap visualizes average engine horsepower across model years for the top five car manufacturers in a dataset loaded via d3.csv. The x-axis shows the year, the y-axis lists manufacturers, and each cell is colored using d3.scaleThreshold with explicit horsepower bins. Interactivity comes through a custom tooltip that appears on mouseover, while a manually constructed legend displays the color ranges. The chart is rendered as SVG using d3.scaleBand for the axes.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/bf702a6877184c33bdd1833fff28c23a?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}