{"version":"1.0","type":"rich","title":"Assignment 7","description":"This example presents an interactive bar chart, heatmap, and stacked or grouped bar visualization built with D3.js (d3.v7). It loads automotive data from a CSV file, displaying average horsepower across model families and generations. The reusable bar chart supports three sorting orders: alphabetical, by value, and by derived attribute. Users toggle between stacked and grouped bar alignments, while a heatmap uses color intensity to represent horsepower values across model families and generations, with all charts rendered as SVG.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/377b5cc676124ff88e0fcc21c68a01b5?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}