[R] number of shared species between sites (VEGAN or RICH?)
ellen.pape at gmail.com
Mon Jul 9 14:27:17 CEST 2012
I'm trying to calculate the number of shared species between sites.
I have a dataframe with in the first column the names of the sites; the
names of the other columns are the species names. To use the shared function
from the package RICH one needs to input different matrices. So actually, I
want to split the dataframe per row so that each row becomes a separate
matrix and then perform the shared function. I used split(dataframe,
site_name), which splits the dataframe, but I cannot call the separate
matrices to calculate the number of shared species..
Does anyone know a way to do this? Or does somebody know a better way of
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