| NShannon | R Documentation |
The Shannon-Wiener diversity index is based on the notion of entropy and measures population heterogeneity.
NShannon(x)
x |
an object of class matrix (or which can be coerced to that class), where each column represents the distribution of a group within spatial units. The number of columns should be greater than 1 (at least 2 groups are required). You should not include a column with total population, because this will be interpreted as a group. |
The Shannon-Wiener normalized diversity index value (numeric)
Shannon C. E. (1948) A mathematical theory of communication. Bell System Technical Journal (27)
Other multigroup eveness indices:
HShannon, ISimpson,
GiniMulti, DMulti, HMulti,
CMulti
Other multigroup indices: PMulti,
RelDivers
x <- segdata@data[ ,1:2]
NShannon(x)
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