AV-G28
Great Circle & Antipode
Generate a great-circle path between two points as GeoJSON, split at the antimeridian, and find the antipode of any point.
● Runs on your device; nothing is uploadedHow to use it
- Enter Start and End as lat, lon
- Set Segments and Decimals
- Choose Split at ±180° or Continuous longitudes
- Copy the GeoJSON or click Download .geojson
- Enter a point under Antipode to get its opposite
Limits
- Segments
- 1–100,000
- Decimals
- 0–12
Features
- RFC 7946 antimeridian splitting into a MultiLineString
- Exact crossing latitude inserted at ±180°
- Spherical distance, initial bearing and highest latitude
- Antipode in decimal degrees and DMS
- Rejects identical and antipodal endpoints
For AI agents: avtools_great_circle
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