I need to represent some non numeric data of a questionnaire in a scatter plot in R. What I mean by a non numeric data is that, I have two questions answers to which are some text. For example Q1 has following answers ("A", "B", "C") and Q2 has following answers ("X", "Y", "Z")
I need to represent these two questions (Q1 and Q2) in a scatter plot in order to show visually which persons who answered to Q1 with "A" answered to Q2 with "X" and so on. It would be better to represent like this:
Thank you.