venn3 {dga}

R Documentation

Three List Venn Diagram

Description

A function that plots a venn diagram of 3 lists. One point is plotted in each region for each record that falls into the corresponding list overlap.

Usage

venn3(
  overlap.counts,
  main = NULL,
  num.test.points = 1e+05,
  p.cex = 0.75,
  write_numbers = FALSE,
  t.cex = 1.25,
  cex.main = 1
)

Arguments

overlap.counts	A vector of length 2^3 that gives the number of records in each overlap in lexicographic order, i.e. 001, 010, 011, 100, etc.
main	the title of the graph
num.test.points	how many test points to generate as potentials to be plotted in the circles.
p.cex	the size of the points to be plotted
write_numbers	indicates whether to print the number of points in each region.
t.cex	the size of the text to write the numbers.
cex.main	the size of the title

Value

a 3-way venn diagram with points inside of each segment representing the number of records on each list overlap.

Author(s)

Kristian Lum kl@hrdag.org

Examples

overlap.counts <- rpois(8, 30)
venn3(overlap.counts, main = "example diagram")

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