Calculate prevalence from numeric vector

Useful as helper for taxon prevalence calculation

prev(x, undetected = 0)

Arguments

x

numeric vector (of taxon counts or proportions)

undetected

value above which a taxon is considered present or detected

Value

numeric value

Examples

prev(c(0, 0, 1, 2, 4))
#> [1] 0.6
prev(c(0, 0, 1, 2, 4), undetected = 1.5)
#> [1] 0.4