Introduction to Writing Functions in R
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Take your R skills up a notch by learning to write efficient, reusable functions.
Course Description
Being able to write your own functions makes your analyses more readable, with fewer errors, and more reusable from project to project. Function writing will increase your productivity more than any other skill! In this course you’ll learn the basics of function writing, focusing on the arguments going into the function and the return values. You’ll be writing useful data science functions, and using real-world data on Wyoming tourism, stock price/earnings ratios, and grain yields.
What You’ll Learn
How to Write a Function
Learn why writing your own functions is useful, how to convert a script into a function, and what order you should include the arguments.
Return Values and Scope
Learn how to return early from a function, how to return multiple values, and understand how R decides which variables exist.
All About Arguments
Learn how to set defaults for arguments, how to pass arguments between functions, and how to check that users specified arguments correctly.
Case Study on Grain Yields
Apply your function writing skills to a case study involving data preparation, visualization, and modeling.
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