{"version":"1.0","type":"rich","title":"A6-Barchart","description":"This bar chart visualizes the average horsepower of cars by manufacturer, using a sequential blue color scale to represent magnitude. The visualization is built with D3 v6, loading data from a CSV file hosted in a GitHub Gist, and then aggregating the data with `d3.rollup` and `d3.mean`. The chart renders as an SVG with bars positioned by `d3.scaleBand` and `d3.scaleLinear`, and includes a color legend via the `d3.legendColor` API from the d3-legend library.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/99f552736e8e4ba298c5edc0a419d2bb?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}