{"version":"1.0","type":"rich","title":"Untitled","description":"A grouped and stacked bar chart displays earthquake counts by magnitude range across US states for 2017 and 2018. A dropdown menu switches between years, animating bar heights and total labels with 750-millisecond transitions. Built with D3 v5, the visualization uses `d3.csv` to load data, `d3.stack` to create layers, and `d3.scaleBand`, `d3.scaleLinear`, and `d3.scaleOrdinal` for axes and color encoding. SVG transitions update the chart smoothly when the selected year changes.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/5db5a4ed23814118886ff9f89a6484de?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}