{"version":"1.0","type":"rich","title":"Tom Test d3js","description":"This interactive line chart visualizes population change over time for global regions, allowing users to select a specific year by moving the mouse across the plot. The visualization highlights the selected year with a vertical line, while each region’s trajectory is color-coded via an ordinal scale. The chart uses d3’s `scaleTime`, `scaleLinear`, `axisLeft`, `axisBottom`, and `line` generator with `curveBasis`, and loads UN population estimates from CSV data. The legend is built using a custom `colorLegend` component.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/c746849686e240ae97f0e9d60ccd883b?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}