{"version":"1.0","type":"rich","title":"Fork of Multiple Line plot with Dropdown","description":"This visualization presents monthly air quality measurements for London from January 2010 through August 2018, using data from the Kings College London Air Quality Dataset in the London Datastore. A dropdown menu lets users select which pollutant to plot on the y-axis, while colored lines show annual trends for each year. Built with D3 v5, the example uses `scaleTime`, `scaleLinear`, `nest`, and `line` to generate smooth curves, with a transition animation updating the chart when the selection changes. The chart includes a color legend and axis labels.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/3423391eb3ec4d3bb1cd1a01b7eef0f1?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}