Day 2 Activities

Author

Mary Piper, Meeta Mistry, Radhika Khetani

Published

December 4, 2019

Exercises

  1. Custom Functions - Let’s create a function temp_conv(), which converts the temperature in Fahrenheit (input) to the temperature in Kelvin (output).
    • We could perform a two-step calculation: first convert from Fahrenheit to Celsius, and then convert from Celsius to Kelvin.
    • The formula for these two calculations are as follows: temp_c = (temp_f - 32) * 5 / 9; temp_k = temp_c + 273.15. To test your function,
    • if your input is 70, the result of temp_conv(70) should be 294.2611.
temp_conv <- function(temp_f) {
  temp_c = (temp_f - 32) * 5 / 9
  temp_k = temp_c + 273.15
  return (temp_k)
}
  1. Nesting Functions - Now we want to round the temperature in Kelvin (output of temp_conv()) to a single decimal place. Use the round() function with the newly-created temp_conv() function to achieve this in one line of code. If your input is 70, the output should now be 294.3.
round(temp_conv(70), digits = 1)
[1] 294.3