{"version":"1.0","type":"rich","title":"Learning D3 Multiple Lines","description":"This line chart displays one week of temperature data in degrees Celsius for cities worldwide, sourced from Data Canvas - Sense Your City. The visualization uses d3.csv, d3.nest, d3.scaleTime, d3.scaleLinear, d3.scaleOrdinal, and d3.line with curveBasis to render smooth, multi-colored city paths. A custom colorLegend module creates an SVG legend, while axis labels and a title are appended manually. The code includes a YouTube tutorial link for learning purposes, and the data is loaded from a VizHub-hosted CSV file.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/dc4f82dcfa074760972e198006393bf7?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}