Gell all polygons from a rendered Leaflet map

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Gell all polygons from a rendered Leaflet map

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Last edited Jan 19, 2024

Created on Jan 19, 2024

This example extracts all polygon geometries from an already-rendered Leaflet map and packages them into a GeoJSON FeatureCollection. It iterates through every layer on the map using `map.eachLayer`, collects markers and polygons, and converts eligible layers to GeoJSON via `layer.toGeoJSON()`. The resulting features are filtered to include only Polygon types and then copied to the clipboard with `copy(output)`. The code relies on Leaflet’s layer inspection and GeoJSON conversion methods, showing how to harvest vector data directly from a live map instance.

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