Make uppercase in array

Question

Use of order Apartment Canada Toronto
38 37 2042 37 Appartment Building Apt 54 357

can you help for making capital letters for the charcaters in my array?

Answer 1

Try this:

names(ordered_use) <-toupper(names(ordered_use))

> ordered_use
         APARTMENT       APARTMENT BLDG  APARTMENT BUILDING      APARTMENT UNIT APPARTMENT BUILDING 
                 38                  37                2042                  37                  54 
                APT 
                357