Write your own function
Wow, things are getting serious… you're about to write your own function! Before you have a go at it, have a look at the following function template:
my_fun <- function(arg1, arg2) {
body
}
Notice that this recipe uses the assignment operator (<-) just as if you were assigning a vector to a variable for example. This is not a coincidence. Creating a function in R basically is the assignment of a function object to a variable! In the recipe above, you're creating a new R variable my_fun, that becomes available in the workspace as soon as you execute the definition. From then on, you can use the my_fun as a function.
Deze oefening maakt deel uit van de cursus
Intermediate R
Oefeninstructies
- Create a function
pow_two(): it takes one argument and returns that number squared (that number times itself). - Call this newly defined function with
12as input. - Next, create a function
sum_abs(), that takes two arguments and returns the sum of the absolute values of both arguments. - Finally, call the function
sum_abs()with arguments-2and3afterwards.
Praktische interactieve oefening
Probeer deze oefening eens door deze voorbeeldcode in te vullen.
# Create a function pow_two()
# Use the function
# Create a function sum_abs()
# Use the function