Examples
Examples
Try the starting example
- Matched community A abundance vector
- 10,5,0
- Matched community B abundance vector
- 5,5,5
- Bray–Curtis dissimilarity
- 0.333333
Try another scenario
- Matched community A abundance vector
- [5, 5, 5]
- Matched community B abundance vector
- [5, 5, 5]
- Bray–Curtis dissimilarity
- 0
Calculation method
Calculation method
Bray–Curtis dissimilarity
sum(abs(A−B))/sum(A+B), paired species order required.
Symbols and units
- a
- Matched community A abundance vector
- b
- Matched community B abundance vector
Use the units shown. A list keeps the order in which you enter its values. The symbol ^ means “raised to the power of”.
Calculation steps and notation
sum(list) adds all entries in the list.
Assumptions & limits
Assumptions & limits
- Nonnegative species abundance vectors. Returns Abundance dissimilarity. 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. Matched community A abundance vector: minimum 0, maximum 1000000000000.0. Matched community B abundance vector: minimum 0, 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.
Further reading
Background reading; this does not imply endorsement or independent review of SumFizz.