How do I plot row number in Graph Builder?

[#1]

As a former gnuplot user, I could plot column "0" as one of the axis, and it would plot the row number on that axis.  

Obviously I could do this with a formula column ("row()"), but is there a way to do this without having to create a new column in my table?

[#2 · Accepted solution]

Right-click on a column name in a dialog box and choose Row > Row. This will add a temporary variable for the row number which can be used like any variable in your data table.

[#3]

Right-click on the column name in the Graph Builder interface? Wow, I had no idea that existed! Thank you!

[#4]

That feature exists everywhere in JMP, not just the Graph Builder. It is called temporary variables. You can use it for many common transformations/formulas.