Margalef Index
From Open Risk Manual
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Definition
The Margalev Index (D) is a simple metric useful for the purpose of measuring diversity.
Details
The index is only applicable for categorical data where all observations can be classified into a finite number of categories (species, types etc)
More precisely, if we have n observations values and a total of S categories, then the D index is defined as
Implementations
Open Source implementations of the Margalev index are available in
- the Python library Concentration Library
- the EcoIndR R package