{"version":"1.0","type":"rich","title":"Melting Data for Multiple Lines","description":"This example visualizes COVID-19 death tolls across multiple countries, plotting each country as a separate line that traces cumulative deaths over days since the first reported case. The chart uses D3 v5 with SVG rendering, employing `nest()` to group the data by country and `line()` with `curveBasis` to draw smooth paths. A draggable vertical line, implemented with D3's `drag()` function, lets users explore data at specific time points, showing the death counts for all countries at that moment. Color legends and axes are generated with `scaleOrdinal` and `axisLeft`/`axisBottom`.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/e2f9696c6a674794802fcd1c3bfa09f3?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}