{"version":"1.0","type":"rich","title":"Fork of Vega-Lite API Template","description":"This example visualizes U.S. state population trends from 2010 to 2019 using a multi-series line chart. The Vega-Lite API constructs marks encoded with x-axis time data, y-axis population values, and color grouping by geographic area, with tooltips for individual states. Population data is loaded asynchronously via d3.csv from a GitHub gist. The visualization renders in SVG and includes a dark-themed config that removes axis domains and customizes label styling for readability.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/2b17985ffb054b9ebaaf3c3bd965ae64?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}