List the indices of all taxa that occur at least min.occ times in each group.

getCoreTaxa(x, groups = c(), min.occ = 1)

## Arguments

x an abundance matrix where rows are taxa and columns samples group membership vector with as many entries as abundances has samples minimal occurrence to count a taxon as present in each group

## Value

indices of core taxa

## Examples

abundances=cbind(c(1,2,2),c(0,1,1),c(0,0,3))
rownames(abundances)=c("taxon1","taxon2","taxon3")
rownames(abundances)[getCoreTaxa(abundances,groups=c(1,2,3))]#> [1] "taxon3"