Visualize frequency of 5 Boolean variables together I have a data set with 5 variables,
a b c d e
1 0 0 1 0
0 1 0 1 1
0 1 1 0 0
0 0 0 1 0
1 1 1 0 0
0 1 1 0 1
1 0 1 0 0
1 0 0 1 1
0 1 0 1 1
0 0 1 1 0
I am only interested in the percentages of occurrence,
occurrence,
| a | b | c | d | e |
.4 | .5 | .5 | .6 | .4
BUT, I would like to visualize in such a way that I can see the overlap, or not, among all the different groups.
Any idea?
If you have richer data (ie more than 10 rows), you will want an upset plot.  Upset plots are a way to view information in an intuitive way like a Venn diagram, but is more useful for 4+ categories.
Some references which may give you some ideas and implementation in R:

https://cran.r-project.org/web/packages/UpSetR/vignettes/basic.usage.html (attached image from r-project.org).
https://www.littlemissdata.com/blog/set-analysis