Loading data into R

Thus far, we've only been entering data directly into the interactive R console. For any dataset of non-trivial size, this is, obviously, an intractable solution. Fortunately for us, R has a robust suite of functions to read data directly from external files.

Go ahead and create a file on your hard disk called favorites.txt that looks like this:

mint chocolate chip,7 

This data represents the number of students in a class that prefer a particular flavor of soy ice cream. We can read the file into a variable called favs as follows:

 > favs <- read.table("favorites.txt", sep=",", header=TRUE) 

If you get an error that there is no such file or directory, ...

Get Data Analysis with R - Second Edition now with the O’Reilly learning platform.

O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.