JMP - Column that generates unique row numbers by comparing between existing rows?
Greetings,If I have the following sample data:ID 1 Date 1ID 1 Date 2ID 1 Date 3ID 2 Date 4ID 2 Date 5ID 2 Date 6ID 2 Date 7ID 3 Date 8ID 3 Date 9ID 3 Date 10ID 3 Date 11ID 3 Date 12For a given row (aka unique ID and Date pair), how to create a new column to indicate this row is Date number X (of Y rows for each unique ID)?ID 1 Date 1 1ID 1 Date 2 2ID 1 Date 3 3ID 2 Date...