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srgist / gist:6338396
Created Aug 26, 2013
Venn Diagram in R
View gist:6338396
circle <- function(x, y, r, ...) {
ang <- seq(0, 2*pi, length = 100)
xx <- x + r * cos(ang)
yy <- y + r * sin(ang)
polygon(xx, yy, ...)
venndia <- function(A, B, C, getdata=FALSE, ...){
cMissing <- missing(C)
if(cMissing){ C <- c() }
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