{"version":"1.0","type":"rich","title":"multi series chart","description":"This multi-series chart displays both the total registered vehicle counts and the corresponding survey years for ten countries. Animated blue bars represent vehicle registrations on the left axis, while a red Catmull-Rom smoothed line overlays the year on the right axis. The visualization uses D3 v7 with SVG, featuring a staggered drawing effect via stroke-dashoffset. Data is loaded from a CSV file, with gridlines and dual axes aiding comparison.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/245b756131ea40a4b3d006b42fc25cf2?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}