{"version":"1.0","type":"rich","title":"piechart","description":"This pie chart shows the distribution of Hubway bike-share stations across municipalities, using a color-coded SVG with a legend to identify each category. The chart is built with D3 v7, loading tab-separated station data via `d3.tsv` and aggregating counts with `d3.rollup`. It renders slices using `d3.pie` and `d3.arc`, with colors assigned through a `d3.scaleOrdinal` based on the `schemeSet2` palette. A legend is manually appended as SVG rectangles and text, and the visualization also includes placeholder X and Y axis labels.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/0793bd455d654cc790e9f26008247a20?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}