Much of this is addressed in my document Mapping polygons and points together dual axis. The real key to this is properly structuring the data source. Most of the time, this must be done outside of Tableau. I'll be happy to help you find a way to do this, but I want to be sure it is worth the effort.
- Are you still looking for a solution to this problem? Since the question has been sitting without response for a few weeks, it is possible you have already solved it. I don't want to spend a bunch of time without confirming you are still needing it.
- Are you able, through some means, to restructure the data outside of Tableau? If you are constrained by IT or other resource constraints, I may not be able to help.
I'd like to help.
Hi! Thanks for your message - I actually already submitted my project so I won't need help anymore. Thank you again so much for wanting to help!