我们使用venn diagram工具在R中绘制venn diagram并不困难。那么，当我们希望得到每一组中的基因列表应该如何处理呢？可以参考下面的代码。
set.seed(1)
symbols <- list(A=sample(letters, 10), B=sample(letters, 5), C=sample(letters, 8))
library(Vennerable)
plot(Venn(symbols))
symbols.all <- sort(unique(unlist(symbols)))
symbols.mat <- matrix(0, nrow=length(symbols.all), ncol=length(symbols),
dimnames=list(genes=symbols.all, groups=names(symbols)))
for(i in 1:length(symbols)) symbols.mat[symbols[[i]], i] <- 1
head(symbols.mat)## groups
## genes A B C
## b 1 0 0
## e 1 1 1
## f 0 1 0
## g 1 0 0
## i 0 1 1
## j 1 0 0library(UpSetR)
upset(as.data.frame(symbols.mat))
symbols.venn <- split(rownames(symbols.mat), apply(symbols.mat, 1, paste, collapse=""))
names(symbols.venn)## [1] "001" "010" "011" "100" "101" "111"names(symbols.venn) <-
sapply(names(symbols.venn), function(.ele)
paste(colnames(symbols.mat)[as.logical(as.numeric(strsplit(.ele, "")[[1]]))],
collapse="__"))
symbols.venn## $C
## [1] "r" "t" "y" "z"
##
## $B
## [1] "f" "q"
##
## $B__C
## [1] "i" "x"
##
## $A
## [1] "b" "g" "j" "l" "n" "s" "u" "w"
##
## $A__C
## [1] "m"
##
## $A__B__C
## [1] "e"