Automate a reference line
As a way to learn JMP and a bit of JSL, I've been keeping track of Covid rates in my state. On a graph with new cases on the y and date on the x, I add a reference line at today's number of new cases as a sort of "we are here." Is there a way to automate this? I can tell that the "12601" and "12381" are the ones that need to change, but I don't know how to tell it to use the most recent values of ...