This function allows you to calculate the number of uses (NU) per species.
Usage
NUs(data)
Arguments
data
is an ethnobotany data set with column 1 'informant' and 2 'sp_name' as row identifiers of informants and of species names respectively.
The rest of the columns are the identified ethnobotany use categories. The data should be populated with counts of uses per person (should be 0 or 1 values).