Venn: Construct intersections of sets
In js229/Vennerable: Venn and Euler area-proportional diagrams

Description Usage Arguments Value Author(s) Examples

Given a collection of Sets, Venn will compute all possible combinations of intersections and return an object of class Venn, storing the combinations as well as the number of elements in each intersection (the 'weights'). It will also accept a specification of the weights directly, or simply of the number of sets desired.

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Venn(Sets, Weight, SetNames, numberOfSets)
Weights(object)
Weights(object) <- value

`Sets`	A list, each element of which can be a list defining the members of a Set
`Weight`	A named vector of weights to associate with each possible combination of Set intersections. Ignored if `Sets` is present.
`SetNames`	A character vector of names for each Set. Ignored if `Sets` present and has names
`numberOfSets`	An integer for the number of Sets. Ignored if `Sets` or `SetNames` present.
`object`	An object of class `Venn`
`value`	An object like `Weight`

An object of class Venn

Jonathan Swinton (jonathan@swintons.net)

Venn(n=3)
data(StemCell)
w <- Venn(Sets=StemCell[1:2])
Weights(w)
# nb order of intersection subsets not guaranteed
Weights(w) <- 1:4
Venn(SetNames=letters[1:5])