View source: R/diversity-components.R
norm_alpha | R Documentation |
Calculates the low-level diversity component necessary for calculating normalised alpha diversity.
norm_alpha(meta)
meta |
object of class |
Values generated from norm_alpha()
may be input into subdiv()
and metadiv()
to calculate normalised subcommunity and metacommunity
alpha diversity.
norm_alpha
returns an object of class powermean
R. Reeve, T. Leinster, C. Cobbold, J. Thompson, N. Brummitt, S. Mitchell, and L. Matthews. 2016. How to partition diversity. arXiv 1404.6520v3:1–9.
pop <- data.frame(a = c(1,3), b = c(1,1)) row.names(pop) <- paste0("sp", 1:2) pop <- pop/sum(pop) meta <- metacommunity(pop) # Calculate normalised alpha component a <- norm_alpha(meta) subdiv(a, 1) metadiv(a, 1)
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