{"version":"1.0","type":"rich","title":"Installation and use of topojson and geojson command line interfaces for simplifying OGC geometries","description":"This example demonstrates a command-line workflow for cleaning and simplifying GeoJSON geometry data using the TopoJSON and GeoJSON interfaces. It first converts a GeoJSON document to TopoJSON and back to truncate coordinate precision to five decimal places, then applies arc simplification with a steradian-based tolerance threshold. The process relies on the `topojson` and `geojson` npm packages, which handle format conversion and geometric reduction. The code shows concrete shell commands for backup, conversion, and file management, using Node.js-based tools rather than a visualization library.","provider_name":"VizHub AI Studio","provider_url":"https://next.vizhub.com","html":"<iframe src=\"https://next.vizhub.com/viz/gist-bfaf27348eacddc51b30bb6453d4df7c?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"1\"></iframe>","width":960,"height":500,"cache_age":3600}