{"version":"1.0","type":"rich","title":"Selecting a year of a line chart","description":"This interactive line chart visualizes population estimates for global regions from 1950 to 2100, combining data from two UN CSV files. A vertical black line marks the currently selected year, which updates when the user hovers over the plot area, prompting a re-render through a state-setting callback. The visualization uses D3.js v5 to scale time and linear axes, render multi-line paths with a basis curve, and display a categorical color legend. The SVG output includes axis tick marks, labels, and a title, all styled via CSS.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/64657c4120334cb09fba6d636d619d09?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}