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Venn Diagram from count species in R

Hello! I don’t understand how to create a venn diagram from a simple species table. For example, three sites. How to calculate overlapping region between them?

Column - species Row- sites

          Sp1  Sp2  Sp3
Site1   1       0      1
Site2   2       2      0
Site3   0       5      4

I found a library limma

venn <- (read.table("table.txt"))
datavenn <- vennCounts(venn)
vennDiagram(datavenn)

But this is only suitable for literal variables.

r

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