{"version":"1.0","type":"rich","title":"rundown","description":"This example demonstrates how SQL queries can filter, analyze, and modify geographic data in CartoDB, using Massachusetts census blocks and Boston corner store locations. It shows spatial queries like distance calculations and bounding-box filters, plus joins to compute nearest fire station distances. The code uses the CartoDB SQL API and CartoDB.js library, with Leaflet for map rendering, to apply dynamic SQL filters and create visualizations without altering the underlying dataset.","provider_name":"VizHub AI Studio","provider_url":"https://next.vizhub.com","html":"<iframe src=\"https://next.vizhub.com/viz/gist-1159fa66ff60671ac3c1?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"1\"></iframe>","width":960,"height":500,"cache_age":3600}