{"version":"1.0","type":"rich","title":"Activity 8 Question 4","description":"This example visualizes the cost of sales over time from 2000 to 2013, combining a smooth line chart with a filled area chart beneath it. The SVG rendering uses D3 v5 APIs including `scaleTime`, `scaleLinear`, `line`, `area`, and `curveBasis` to draw the paths, while `axisBottom` and `axisLeft` generate gridlines with red tick labels. The data is loaded as CSV from a GitHub gist, with the year parsed into a Date object and cost coerced to a number.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/cf9039eddcbf48659fb99d75fd003b4b?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}