{"version":"1.0","type":"rich","title":"Untitled","description":"This example visualizes population growth over time for global regions, drawing on UN population estimates (1950–2014) and medium-variant projections (2015–2100). It renders multiline time-series curves using d3.line with curveBasis, scaled by d3.scaleTime and d3.scaleLinear, while a categorical d3.scaleOrdinal with schemeCategory10 assigns region colors. The chart includes axes, gridlines, and a custom color legend built via d3-selection. Data is processed by melting a wide CSV format into tidy rows, filtering for regions only, and concatenating the historical and projected datasets.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/fc83453cae7a4fc58b782939ffeb4e39?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}