How can I make a conditional subset table without directly calling a column name?
The first 3 lines of this script create a new data table where heights are less than 60. This part runs fine.
For the function that I would like to develop I would like to reference a column in a different way than using :height. I have tried 4 different ways to reference the column, but none of them work. I have used the column function and get column reference function (please see below).
dt = Op
...