[英]Venn Diagram with Item labels
假設我有兩個向量
foo <- c('a','b','c','d')
baa <- c('a','e','f','g')
有誰知道一種生成維恩圖的方法,但可以在圖中可視化矢量項。
像這樣? (在PowerPoint中制作)
使用來自VennDiagram
軟件包的venn.diagram
函數的快速解決方案。 標簽(計數)在函數中進行了硬編碼,因此無法使用函數參數進行更改。 但是對於這樣一個簡單的示例,您可以自己更改grobs
。
library(VennDiagram)
# your data
foo <- c('a','b','c','d')
baa <- c('a','e','f','g')
# Generate plot
v <- venn.diagram(list(foo=foo, baa=baa),
fill = c("orange", "blue"),
alpha = c(0.5, 0.5), cat.cex = 1.5, cex=1.5,
filename=NULL)
# have a look at the default plot
grid.newpage()
grid.draw(v)
# have a look at the names in the plot object v
lapply(v, names)
# We are interested in the labels
lapply(v, function(i) i$label)
# Over-write labels (5 to 7 chosen by manual check of labels)
# in foo only
v[[5]]$label <- paste(setdiff(foo, baa), collapse="\n")
# in baa only
v[[6]]$label <- paste(setdiff(baa, foo) , collapse="\n")
# intesection
v[[7]]$label <- paste(intersect(foo, baa), collapse="\n")
# plot
grid.newpage()
grid.draw(v)
哪個產生
顯然,這種方法將很快失去更多類別和交叉點的控制。
另一種我覺得更簡單的方法是使用帶有show_elements = TRUE
的ggvenn
package 。
library(ggvenn)
library(RColorBrewer)
AA <- c("hi","foo", "bar","yep","woo","hoo")
BB <- c("baa","yep", "woo","yes")
CC <- c("yes","foo","hi","woo", "huh")
x <- list(AA=AA , BB=BB , CC=CC)
ggvenn(x, show_elements = T, label_sep = "\n", fill_color = brewer.pal(name="Set2",n=3))
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