Hello! How should data be prepared for entry into statistical programs?

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Marius Ole Johansen

Assuming you have a data set with for instance Reservoir (A, B, C etc) and a presence/absence matrix (i.e., species01 at Reservoir A = 0 or 1), the R code is

library(vegan)

jaccard

Sanjarbek Umarov Sidiqovich

Marius Ole Johansen Thank you very much for your answer!

is it like this picture?

Yes, that's perfect

Marius Ole Johansen Thank you for all the information!