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")an object of class Matrix, where rows are sites and columns are species.
family of dissimilarity indices, partial match of "sorensen" or "jaccard".
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.
beta_core is helper function to compute the basic quantities needed
for computing the "sorensen" or "jaccard" index.
betapart.core, betapart,
phylobeta
data(africa)
x <- africa$comm
bc <- beta_core(x)
beta_sorensen <- beta_diss(x)