{"version":"1.0","type":"rich","title":"Line Chart with Multiple Lines","description":"This line chart shows annual CO2 emissions (in million tonnes) for multiple countries over time, with each country represented as a separate colored line. The data comes from the Data Canvas - Sense Your City dataset, displayed as an SVG using D3 v5. The visualization uses d3.nest to group data by country, d3.scaleTime and d3.scaleLinear for axes, and d3.line with curveBasis for smooth paths. A color legend lists all countries alongside the chart.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/4fc5621c683a46d7bc6d50f9cdcae06a?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}