Check if an Object is a Call in R Programming - is.call() Function Last Updated : 19 Jun, 2020 Comments Improve Suggest changes Like Article Like Report is.call() function in R Language is used to determine whether x is a call or not. Syntax: is.call(x) Parameters: x: an arbitrary R object Example 1: Python3 # R program to illustrate # is.call function # Calling is.call() function is.call(call) Output: [1] FALSE Example 2: Python3 # R program to illustrate # is.call function # Calling is.call() function is.call(call("sin", 23)) Output: [1] TRUE Comment More infoAdvertise with us Next Article Check if an Object is a Call in R Programming - is.call() Function K Kanchan_Ray Follow Improve Article Tags : R Language R Functions R Object-Function Similar Reads Check if an Object is a Table in R Programming - is.table() Function is.table() function in R Language is used to check if an object is a table. Syntax: is.table(x) Parameters: x: Object to be checked Example 1: Python3 1== # R Program to check # if an object is a table # Creating a vector vec = c(2, 4, 3, 1, 2, 3, 2, 1, 4, 2) # calling is.table() Function is.table(v 1 min read Create an Object of mode call in R Programming - call() Function call() function in R Language is used to create or test for objects of mode "call". Syntax: call(name, ...) Parameters: name: a non-empty character string naming the function to be called ...: arguments to be part of the call Example 1: Python3 # R program to illustrate # call function # Calling cal 1 min read Check if an Object is of Type Character in R Programming - is.character() Function is.character() function in R Language is used to check if the object passed to it as argument is of character type. Syntax: is.character(x) Parameters: x: Object to be checked Example 1: Python3 1== # R program to check if # object is a character # Creating a vector x1 <- 4 x2 <- c("a 1 min read 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 1 min read Coercing an Object of mode "list" to mode "call" in R Programming - as.call() Function as.call() function in R Language is used to coerce the object of mode "list" to mode "call". The first element of the list becomes the function part of the call. Syntax: as.call(x) Parameters: x: an arbitrary R object Example 1: Python3 # R program to illustrate # as.call function # Calling the as.c 1 min read Check if the Object is a Matrix in R Programming - is.matrix() Function is.matrix() function in R Language is used to return TRUE if the specified data is in the form of matrix else return FALSE. Syntax: is.matrix(x) Parameters: x: specified matrix Example 1: Python3 # R program to illustrate # is.matrix function # Specifying some different types of arrays A <- matri 1 min read Checking if the Object is a Factor in R Programming - is.factor() Function is.factor() function in R Language is used to check if the object passed to the function is a Factor or not. It returns a boolean value as output. Syntax: is.factor(Object) Parameters: Object: Object to be checked Example 1: Python3 1== # Creating a vector x<-c("female", "male 1 min read Check if an Object is an Expression in R Programming - is.expression() Function is.expression() function in R Language is used to check if the object passed to it as argument is of the expression class. Syntax: is.expression(object) Parameters: object: Object to be checked Example 1: Python3 1== # R program to check if # an object is an expression # Creating an object x <- 1 min read Check if the Object is a Data Frame in R Programming - is.data.frame() Function is.data.frame() function in R Language is used to return TRUE if the specified data type is a data frame else return FALSE. R data.frame is a powerful data type, especially when processing table (.csv). It can store the data as row and columns according to the table. Syntax: is.data.frame(x) Paramet 1 min read Check if the Argument is a Name in R Programming - is.name() Function is.name() function in R Language is used to return TRUE if the argument is name else returns FALSE. The is.name() and is.symbol() functions are identical. Syntax: is.name(x) Parameters: x: R object to be tested Example 1: Python3 # R program to illustrate # is.name() function # Initializing a string 1 min read Like