venn diagram - Compare two lists in R -

i have 2 lists of ids.

i compare 2 lists, in particular interested in following figures:

• how many ids both in list , b
• how many ids in not in b
• how many ids in b not in a

i love draw venn diagram.

here basics try out:

> = c("dog", "cat", "mouse") > b = c("tiger","lion","cat") > %in% b [1] false  true false > intersect(a,b) [1] "cat" > setdiff(a,b) [1] "dog"   "mouse" > setdiff(b,a) [1] "tiger" "lion"  

similarly, counts as:

> length(intersect(a,b)) [1] 1 > length(setdiff(a,b)) [1] 2 > length(setdiff(b,a)) [1] 2