{"version":"1.0","type":"rich","title":"Assignment2_Question1(AreaChart)","description":"This area chart visualizes long-term sales performance across four regions (North, South, East, West), using a stacked layout to show the total sales composition by year. Built with D3 v7, it reads CSV data, parses years, and applies `d3.stack()` with `d3.stackOffsetNone` to create the layered areas, colored via `d3.schemeCategory10`. The chart includes axes, labels, and a legend, with interactive tooltips that display region-specific sales values on mouseover using the `pointer-events` attribute and custom HTML tooltip styling.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/c75f8b7231c7444481ce2c1c59a6da02?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}