R Quick Syntax Reference: A Pocket Guide to the Language, APIs and Library

© Margot Tollefson 2019

Margot TollefsonR Quick Syntax Referencehttps://doi.org/10.1007/978-1-4842-4405-0_11

11. Descriptive Functions and Manipulating Objects

Margot Tollefson¹ 

(1)

Stratford, IA, USA

 

For arrays, matrices, vectors, lists, and expressions, in command line R, there are a number of functions that describe various attributes of an object. In R Studio, many attributes, such as the number of columns in a matrix or the length of a list, are given to the right of the object name under the “Environment” tab in the upper right window.

Also, there are a number of functions that manipulate objects to create new objects. The functions covered in this chapter are the descriptive functions dim(), nrow(), NROW(), ncol(), NCOL(), length(), nchar(), ...