{"version":"1.0","type":"rich","title":"data visualization stacked bar chart","description":"This example visualizes COVID-19 total cases by country, grouped into stacked horizontal bars organized by continent. The chart uses D3 v7’s `d3.csv` to load remote data, `d3.groups` to structure the data hierarchically, and `d3.scaleBand`/`d3.scaleLinear` with SVG rendering. Each country is a rectangle colored via `d3.schemeSet3`, with rotated axis labels for readability.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/981a47c435e941429924ba4551340aad?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}