维恩图与项目标签

时间:2014-07-29 16:00:34

标签: r venn-diagram

假设我有两个向量

foo <- c('a','b','c','d')
baa <- c('a','e','f','g')

是否有人知道生成维恩图的方法,但在图中可以看到矢量项。

像这样? (用powerpoint制作) enter image description here

2 个答案:

答案 0 :(得分:15)

使用venn.diagram包中的VennDiagram函数的快速解决方案。标签(计数)在函数中是硬编码的,因此无法使用函数参数进行更改。但是对于像这样的简单示例,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)

哪个产生

enter image description here

显然,这种方法会很快失控,会有更多的类别和交叉点。

答案 1 :(得分:6)

使用RAM包:

library(RAM)
foo <- c('a','b','c','d')
baa <- c('a','e','f','g')
group.venn(list(foo=foo, baa=baa), label=TRUE, 
    fill = c("orange", "blue"),
    cat.pos = c(0, 0),
    lab.cex=1.1)

enter image description here