R Programming By Example

Conventions

In this book, you will find a number of text styles that distinguish between different kinds of information. Here are some examples of these styles and an explanation of their meaning. Code words in text, database table names, folder names, filenames, file extensions, pathnames, dummy URLs, user input, and Twitter handles are shown as follows: "We can load the contents of the data.csv file into a data frame (the most intuitive structure to use with data in CSV format) by using the read.csv() function."

A block of code is set as follows:

data <- read.csv("./data_brexit_referendum.csv") data[data$Leave == -1, "Leave"] <- NA 

When we wish to draw your attention to a particular part of a code block, the relevant lines or items are ...