beta_core | R Documentation |
Data are assumed to be presence / absence (0 / 1) and all values greater zero are assumed to reflect presence.
beta_core(x)
beta_diss(x, index.family = "sorensen")
x |
an object of class Matrix, where rows are sites and columns are species. |
index.family |
family of dissimilarity indices, partial match of "sorensen" or "jaccard". |
beta_core
is helper function to compute the basic quantities needed
for computing the "sorensen" or "jaccard" index.
beta_core
returns an object of class beta_diss
like the
betapart.core
function. This object can be called by
beta.pair
or beta.multi
.
beta_diss
returns a list with three dissimilarity matrices. See
beta.pair
for details.
Klaus Schliep
betapart.core
, betapart
,
phylobeta
data(africa)
x <- africa$comm
bc <- beta_core(x)
beta_sorensen <- beta_diss(x)
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