Wow wow wow. Many helpful replies, and lots to investigate. Thank you so much.
I think this may do the trick for me. This is the first I'm hearing about Xpresso so I think I have a lot of reading up to do—just for clarification, the vectors are being output to console, right? What is the table to the right of the console, with columns Polygon, A, B, and C? Is that a normalized version of the console output?