|||
by package VennDiagram
install VennDiagram
install.packages(VennDiagram)
librar(VennDiagram)
library(grid)
a=c()
b=c()
c=c()
d=c()
venn.diagram(list(A=a,B=b,C=c,D=d),fill=c("gray","blue","red","green"),"name.tiff")
if 1
succeed
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