This function creates a list of pairwise comparisons to
be performed in order to create an up to 5-way Venn
diagram using the R package VennDiagram. Internal use
mostly.
Usage
make.venn.pairs(algs)
Arguments
algs
a vector with the names of the sets (up to
length 5, if larger, it will be truncated with a
warning).
Value
A list with as many pairs as the comparisons to be made
for the construction of the Venn diagram. The pairs are
encoded with the uppercase letters A through E, each one
corresponding to order of the input sets.