Making Choices

Simple If Statement

To determine if a file named thesis_data.csv exists in your working directory you can use the code:

This code returns TRUE if the files exists and FALSE if it does not.

1. Write an if statement that loads the file using read.csv() only if the file exists.
2. Add an else clause that prints “OMG MY THESIS DATA IS MISSING. NOOOO!!!!” if the file doesn’t exist.

[click here for output]