Examples
Examples
Try the starting example
- Buoy observations [time seconds,longitude degrees,latitude degrees]
- [[0,0,0],[3600,0.1,0.1],[7200,0.2,0.1]]
- Spherical earth radius (m)
- 6371008.8
- Intervals [start index,speed m/s,bearing degrees,distance m]
- [[0,4.3681541838,44.9999563667,15725.3550617],[1,3.08874752427,89.9999127336,11119.4910874]]
Try another scenario
- Buoy observations [time seconds,longitude degrees,latitude degrees]
- [[0,0,0],[3600,0.1,0.1],[7200,0.2,0.1]]
- Spherical earth radius (m)
- 6378137
- Intervals [start index,speed m/s,bearing degrees,distance m]
- [[0,4.37304149092,44.9999563667,15742.9493673],[1,3.09220336789,89.9999127336,11131.9321244]]
Calculation method
Calculation method
Intervals [start index,speed m/s,bearing degrees,distance m]
Haversine great-circle distance and initial bearing, divided by observed time interval.
Symbols and units
- a
- Buoy observations [time seconds,longitude degrees,latitude degrees]
- b
- Spherical earth radius (m)
Use the units shown. A list keeps the order in which you enter its values. The symbol ^ means “raised to the power of”.
Assumptions & limits
Assumptions & limits
- Timestamped buoy positions, geodesic method. Returns Ground drift speed-direction. All coefficients and observations are user supplied; results describe only the stated mathematical model. Quantities are deterministic calculations from supplied observations and assumptions; no external data is fetched. Supported limits: Finite inputs only; numeric fields bounded as labelled. Lists and JSON records are limited to 256 entries unless a stricter tool bound is stated. No automatic design approval, legal conclusion, treatment recommendation or safety certification. Spherical earth radius (m): minimum 1e-12, maximum 1000000000000.0.
Are these inputs private?
These calculations run in your browser. A shared link contains the values you choose to share. Only questions submitted to the separate AI finder are sent to OpenAI.