{"version":"1.0","type":"rich","title":"Line Chart with Circle Tooltip D3 V4","description":"This line chart displays yearly population values from a JSON file, with a circle tooltip that follows the mouse to reveal the exact value at each data point. Built with D3 v4 and rendered as SVG, the chart uses `d3.json` to load data, `d3.timeParse` and `d3.scaleTime` for the x-axis, and `d3.line` to draw the line. A bisector and `d3.mouse` handle the interactive tooltip, which includes hover lines and a formatted y-axis showing values in thousands.","provider_name":"VizHub AI Studio","provider_url":"https://next.vizhub.com","html":"<iframe src=\"https://next.vizhub.com/viz/gist-cfb7dcd7951826b9eacd54f0647f48d3?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"1\"></iframe>","width":960,"height":500,"cache_age":3600}