Named lists
Knowing how forgetful you are, you decide it would be important to add names to your list so you can remember what each element is describing. There are two ways to do this!
You could name the elements as you create the list with the form name = value:
my_list <- list(my_words = words, my_numbers = numbers)
Or, if the list was already created, you could use names():
my_list <- list(words, numbers)
names(my_list) <- c("my_words", "my_numbers")
Both would result in:
my_list
$my_words
[1] "I <3 R"
$my_numbers
[1] 42 24
Deze oefening maakt deel uit van de cursus
Introduction to R for Finance
Oefeninstructies
- The
portfoliolist is available to work with. - Use
names()to add the following names to your list:"portfolio_name","apple","ibm","correlation", in that order. - Print
portfolioto see your newly named list.
Praktische interactieve oefening
Probeer deze oefening eens door deze voorbeeldcode in te vullen.
# Add names to your portfolio
# Print portfolio