{"version":"1.0","type":"rich","title":"National Park Trail Scatter Plot","description":"This scatter plot shows the surface types of trails across national parks. Dot opacity represents the quantity of trails in a class, while dot size indicates the trail’s development level, from class 1 barely developed to class 5 fully developed. The visualization uses vega-lite-api to render the chart, with D3’s `csv` function loading data from a GitHub gist. Marks are colored by seasonal access and positioned by park unit and trail surface, with the view fitted to the window using `autosize`.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/9c93450d4b8645e9b52757f31da0da59?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}