using a variable as column name when creating a plot
The script below loads some data and should create twice the same plot.
The first one by referring to the column name by using a variable (test1), the second one by calling the column name directly.
The second one works fine, but for the first one I get an empty plot area. I guess there is a problem with how I define or call test1. I have tried different approaches, but so far nothing worked.
Nam...