has an examle of identifying adjacent areas. The page has two links, one to a display of a map and the other the data and program code to create the display. It uses map data sets from the SAS Graph map library.
2025 SAS Hackathon: There is still time!
Good news: We've extended SAS Hackathon registration until Sept. 12, so you still have time to be part of our biggest event yet – our five-year anniversary!