Examples
Examples
Try the starting example
- Orientation samples [trend degrees,plunge degrees]
- [[10,20],[20,25],[15,15]]
- Convention: 0 directional mean; 1 axial principal eigenvector
- 0
- Mean trend,plunge (degrees)
- [14.9405639327,20.0460938072]
- Concentration
- 0.995264
Try another scenario
- Orientation samples [trend degrees,plunge degrees]
- [[10,20],[20,25],[15,15]]
- Convention: 0 directional mean; 1 axial principal eigenvector
- 1
- Mean trend,plunge (degrees)
- [14.9343227226,20.0406936284]
- Concentration
- 0.990552
Calculation method
Calculation method
Mean trend,plunge (degrees)
Directional vector mean or leading eigenvector of orientation scatter matrix for axial data.
Concentration
Directional resultant length/N; axial largest scatter eigenvalue/N.
Symbols and units
- a
- Orientation samples [trend degrees,plunge degrees]
- b
- Convention: 0 directional mean; 1 axial principal eigenvector
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
- Orientation samples, axial-directional convention. Returns Mean direction and concentration. 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. Convention: 0 directional mean; 1 axial principal eigenvector: minimum 0, maximum 1.
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.
Further reading
Background reading; this does not imply endorsement or independent review of SumFizz.