Create an Object of mode call in R Programming - call() Function Last Updated : 19 Jun, 2020 Comments Improve Suggest changes Like Article Like Report 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 call() function x <- call("sin", 23) y <- call("cos", 0) x y # Evaluating values of call eval(x) eval(y) Output: sin(23) cos(0) [1] -0.8462204 [1] 1 Example 2: Python3 # R program to illustrate # call function # Calling call() function x <- call("round", 10.5) x # Initializing a round character f <- "round" # Calling call() function call(f, quote(A)) Output: round(10.5) round(A) Example 3: Python3 # R program to illustrate # call function # Initializing round value # without its character f <- round # Calling call() function # which will give an error # bcs the argument should be # a character string call(f, quote(A)) Output: Error in call(f, quote(A)) : first argument must be a character string Execution halted Comment More infoAdvertise with us Next Article Create an Object of mode call in R Programming - call() Function K Kanchan_Ray Follow Improve Article Tags : R Language R Functions R Object-Function Similar Reads 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 an Object is a Call in R Programming - is.call() Function 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 ill 1 min read Convert a Numeric Object to Character in R Programming - as.character() Function as.character() function in R Language is used to convert a numeric object to character object. 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The length of the value vector passed must be exactly equal to the length of the obj 2 min read Convert a Character Object to Integer in R Programming - as.integer() Function as.integer() function in R Language is used to convert a character object to integer object. Syntax: as.integer(x) Parameters: x: Character Object Example 1: Python3 1== # R program to convert a character object # to an integer object # Calling as.integer() function as.integer("4") as.inte 1 min read Like