Display the internal Structure of an Object in R Programming - str() Function

List all the Objects present in the Current Working Directory in R Programming - ls() Function

Last Updated : 17 Jun, 2020

ls() function in R Language is used to list the names of all the objects that are present in the working directory.

Syntax: ls() Parameters: This function needs no argument

Example 1:

Python3 1==

# R program to list all the object names

# Creating a vector
vec <- c(1, 2, 3)

# Creating a matrix
mat <- matrix(c(1:4), 2)

# Creating an array
arr <- array(c(1:4), 2)

# Calling ls() Function
ls()

Output:

[1] "arr" "mat" "vec"

Example 2:

Python3 1==

# R program to list all the object names

# Creating a list
list1 = list("Numbers" = c(1:3), 
             "Characters" = c(1:5)) 

# Creating a Data frame
df = data.frame("Numbers" = c(1:3), 
                "Characters" = c(4:6)) 

# Calling ls() Function
ls()

Output:

[1] "df"    "list1"

Display the internal Structure of an Object in R Programming - str() Function

N

nidhi_biet

Improve

Article Tags :

Similar Reads

Check if the Object is a List in R Programming - is.list() Function

is.list() function in R Language is used to return TRUE if the specified data is in the form of list, else returns FALSE. Syntax: is.list(X) Parameters: x: different types of data storage Example 1: Python3 # R program to illustrate # is.list function # Initializing some list a <- list(1, 2, 3) b

Convert an Object to List in R Programming - as.list() Function

as.list() function in R Programming Language is used to convert an object to a list. These objects can be Vectors, Matrices, Factors, and dataframes. Syntax: as.list(object) Parameters:Â object: Vector, Matrix, factor, or data frameÂ R - as.list() Function ExampleExample 1: Converting Vector to list

Convert an Object to a String in R Programming - toString() Function

toString() function in R Language is used to convert an object into a single character string. Syntax: toString(x, width) Parameters: x: Object width: maximum string width Example 1: Python3 1== # R program to convert an object to string # Creating a vector x <- c("Geeks", "for

Print the Argument to the Screen in R Programming - print() Function

print() function in R Language is used to print out the argument to the screen. Syntax: print(x, digits, na.print) Parameters: x: specified argument to be displayed digits: defines minimal number of significant digits na.print: indicates NA values output format Example 1: Python3 # R program to illu

Display the internal Structure of an Object in R Programming - str() Function

str() function in R Language is used for compactly displaying the internal structure of a R object. It can display even the internal structure of large lists which are nested. It provides one liner output for the basic R objects letting the user know about the object and its constituents. It can be

Convert an Object into a Vector in R Programming - as.vector() Function

as.vector() function in R Language is used to convert an object into a vector. Syntax: as.vector(x) Parameters: x: Object to be converted Example 1: Python3 1== # R program to convert an object to vector # Creating an array x <- array(c(2, 3, 4, 7, 2, 5), c(3, 2)) x # Calling as.vector() Function

Print the Value of an Object in R Programming - identity() Function

identity() function in R Language is used to print the value of the object which is passed to it as argument. Syntax: identity(x) Parameters: x: An Object Example 1: Python3 1== # R program to print # the value of an object # Creating a vector x <- c(1, 2, 3, 4) # Creating a list list1 <- list

Get a List of all the Attached Packages in R Programming - search() Function

search() function in R Language is used to get the list of all the attached packages in the R search path. Syntax: search() Parameters: This function takes no parameters. Example 1: Python3 1== # R program to list the packages # attached to R search path # Calling search() function search() Output:

Printing out to the Screen or to a File in R Programming - cat() Function

cat() function in R Language is used to print out to the screen or to a file.Â Syntax:Â cat(..., file = "", sep = " ", fill = FALSE, labels = NULL, append = FALSE)Parameters:Â ...: atomic vectors, names, NULL and objects with no outputÂ file: the file in which printing will be doneÂ sep: specified separ

Convert an Object to a Table in R Programming - as.table() Function

as.table() function in R Language is used to convert an object into a table. Syntax: as.table(x) Parameters: x: Object to be converted Example 1: Python3 1== # R Program to convert # an object to a table # Creating a vector vec = c(2, 4, 3, 1, 2, 3, 2, 1, 4, 2) # Calling as.table() Function as.table