{"version":"1.0","type":"rich","title":"Line Chart","description":"This line chart displays sales volume over time for multiple districts, using distinct colors to differentiate each district’s trend. The visualization uses D3 v5 with SVG rendering, employing `scaleTime` and `scaleLinear` for axes, `line` with `curveBasis` for smoothed paths, and `nest` to group data by district. Data comes from a CSV file parsed with dayjs. A custom `colorLegend` function renders the color key, and axis labels and a title annotate the chart.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/273791e0d9084337a5525de11b347d72?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}