Objects
All R code manipulates objects. The simplest way to think about an object is as a “thing” that is represented by the computer. Examples of objects in R include numeric vectors, character vectors, lists, and functions. Here are some examples of objects:
> # a numerical vector (with five elements) > c(1,2,3,4,5) [1] 1 2 3 4 5 > # a character vector (with one element) > "This is an object too" [1] "This is an object too" > # a list > list(c(1,2,3,4,5),"This is an object too", " this is a list") [[1]] [1] 1 2 3 4 5 [[2]] [1] "This is an object too" [[3]] [1] " this is a list" > # a function > function(x,y) {x + y} function(x,y) {x + y}
Get R in a Nutshell 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.