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suma2Venn transforms a matrix of characters into a binary matrix and creates
a vennDiagram of the common elements between columns
suma2Venn(x, ...)suma2Venn returns a Venn Plot such as that created by the
vennDiagram funcionsuma2Venn creates a list of all elements of a matrix or data frame of characters and computes
the presence/absence of each element in each column of the matrix. This results is a numeric
matrix of 1 and 0 which can be taken by the
vennDiagram to generate a Venn Plot
vennDiagrama <- c("a","b","c", "d", "e", NA, NA)
b <- c("a","b","f", NA, NA, NA, NA)
c <- c("b","e","f", "h", "i", "j", "k")
x <- cbind(a, b,c)
suma2Venn(x)
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