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Performing different Operations on Two Arrays in R Programming – outer() Function

  • Last Updated : 02 Mar, 2021
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outer() function in R Language is used to apply a function to two arrays.
 

Syntax: outer(x, y, FUN=”*”, …)
Parameters: 
x, y: arrays 
FUN: function to use on the outer products, default value is multiply 
 

Example 1: 
 

Python3




# R program to illustrate
# outer function
 
# Initializing two arrays of elements
x <- c(1, 2, 3, 4, 5)
y<- c(2, 4, 6)
 
# Multiplying array x elements with array y elements
# Here multiply (*) parameter is not used still this
# function take it as default
outer(x, y)

Output: 
 



     [, 1] [, 2] [, 3]
[1, ]    2    4    6
[2, ]    4    8   12
[3, ]    6   12   18
[4, ]    8   16   24
[5, ]   10   20   30

Example 2: 
 

Python3




# R program to illustrate
# outer function
 
# Initializing two arrays of elements
x <- c(1, 2, 3, 4, 5)
y<- c(2, 4, 6)
 
# Adding array x elements with array y elements
outer(x, y, "+")

Output: 
 

     [, 1] [, 2] [, 3]
[1, ]    3    5    7
[2, ]    4    6    8
[3, ]    5    7    9
[4, ]    6    8   10
[5, ]    7    9   11

 

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