Data Carpentry for Biologists

Simple If Statement (Making Choices)

To determine if a file named thesis_data.csv exists in your working directory you can use the code to get a list of available files and directories:

list.files()
  1. Use the %in% operator to write a conditional statement that checks to see if thesis_data.csv is in this list.
  2. Write an if statement that loads the file using read.csv() only if the file exists.
  3. Add an else clause that prints “OMG MY THESIS DATA IS MISSING. NOOOO!!!!” if the file doesn’t exist.
  4. Make sure your actual thesis data is backed up.
Expected outputs for Simple If Statement: 1