Placemark is a powertool for creating maps. Import, export, draw, analyze, and share map data.
The Placemark company supports and develops many open source components, which you can see and use here.
Forked from mapbox/togeojson
convert KML, TCX, and GPX to GeoJSON, without the fuss
Normalize the DataTransferItems interface from a drop event
a checker for the geojson format. goes beyond a schema, checking semantics and producing character-level warnings.
modern parser & stringifier for WKT, EWKT, and GeoJSON
A flexible web-based editor, converter, visualization tool, for geospatial data
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