Check terrain
check_terrainRead-only
Check ground elevation along a route or around a point to see if rising or falling terrain affects the 120 m drone limit, with warnings for your planned flight height.
Instructions
Ground elevation along a route or around a point, against the 120 m rule: the 120 m limit is measured from the surface below the aircraft, so rising ground eats into clearance and falling ground can put a fixed-height flight above the limit. Give waypoints (2 to 50 places or [lon, lat] pairs) for a profile, or a place / lat and lon for the ground within radius_m. Reports the highest and lowest ground relative to the take-off point and warnings for the planned flight height. Elevations from Copernicus GLO-90 via Open-Meteo, about 90 m resolution.
Input Schema
TableJSON Schema
| Name | Required | Description | Default |
|---|---|---|---|
| lat | No | Latitude in decimal degrees (WGS84). | |
| lon | No | Longitude in decimal degrees (WGS84), negative west of Greenwich. | |
| place | No | Place name, postcode or landmark in the UK, e.g. "Tyndale Monument", "BS1 6QF", "Durdle Door". Use lat/lon instead if you already have coordinates. | |
| format | No | text for a readable report (default), json for structured output, brief for two or three spoken-friendly sentences (use in voice conversations). | text |
| step_m | No | Route mode: sample spacing along the route. | |
| radius_m | No | Point mode: radius of ground to sample. | |
| waypoints | No | Route as place names or [lon, lat] pairs. | |
| flight_height_m | No | Planned height above the take-off point. |