R language operator

May 12, 2021 R language tutorial

An operator is a symbol that tells the compiler to perform specific mathematical or logical operations. T he R language has a wealth of built-in operators and provides the following types of operators.

The type of operator

There are several operator types in the R language:

Arithmetic operator
The relationship operator
The logical operator
The assignment operator
Other operators

Arithmetic operator

The following table shows the arithmetic operators supported by the R language. T he operator works on each element of the vector.

Operator	Describe	Cases
+	The two vectors add up	v <- c( 2,5.5,6) t <- c(8, 3, 4) print(v+t) It produces the following results - 10.0 8.5 10.0
-	The two vectors are subtracted	v <- c( 2,5.5,6) t <- c(8, 3, 4) print(v-t) It produces the following results - -6.0 2.5 2.0
*	The two vectors multiply each other	v <- c( 2,5.5,6) t <- c(8, 3, 4) print(v*t) It produces the following results - 16.0 16.5 24.0
/	Divide the first vector from the second	v <- c( 2,5.5,6) t <- c(8, 3, 4) print(v/t) When we execute the code above, it produces the following results - 0.250000 1.833333 1.500000
%%	Two vectors for balance	v <- c( 2,5.5,6) t <- c(8, 3, 4) print(v%%t) It produces the following results - [1] 2.0 2.5 2.0
％/％	The two vectors divide each other for business	v <- c( 2,5.5,6) t <- c(8, 3, 4) print(v%/%t) It produces the following results - [1] 0 1 1
^	The index of the second vector as the first vector	v <- c( 2,5.5,6) t <- c(8, 3, 4) print(v^t) It produces the following results - [1] 256.000 166.375 1296.000

The relationship operator

The following table shows the relationship operators supported by the R language. C ompare each element of the first vector with the corresponding element of the second vector. T he result of the comparison is the Boolean value.

Operator	Describe	Cases
>	Check that each element of the first vector is larger than the corresponding element of the second vector.	v <- c(2,5.5,6,9) t <- c(8,2.5,14,9) print(v>t) It produces the following results - FALSE TRUE FALSE FALSE
<	Check that each element of the first vector is less than the corresponding element of the second vector.	v <- c(2,5.5,6,9) t <- c(8,2.5,14,9) print(v < t) It produces the following results - TRUE FALSE TRUE FALSE
==	Check that each element of the first vector is equal to the corresponding element of the second vector.	v <- c(2,5.5,6,9) t <- c(8,2.5,14,9) print(v == t) It produces the following results - FALSE FALSE FALSE TRUE
<=	Check that each element of the first vector is less than or equal to the corresponding element of the second vector.	v <- c(2,5.5,6,9) t <- c(8,2.5,14,9) print(v<=t) It produces the following results - TRUE FALSE TRUE TRUE
> =	Check whether each element of the first vector is greater than or equal to the corresponding element of the second vector.	v <- c(2,5.5,6,9) t <- c(8,2.5,14,9) print(v>=t) It produces the following results - FALSE TRUE FALSE TRUE
!=	Check that each element of the first vector is not equal to the corresponding element of the second vector.	v <- c(2,5.5,6,9) t <- c(8,2.5,14,9) print(v!=t) It produces the following results - TRUE TRUE TRUE FALSE

The logical operator

The following table shows the logical operators supported by the R language. I t applies only to vectors of logic, numbers, or complex types. All numbers greater than 1 are considered logical value TRUE.
Compare each element of the first vector with the corresponding element of the second vector. The result of the comparison is the Boolean value.

Operator	Describe	Cases
&	It is called the element logic AND operator. It combines each element of the first vector with the corresponding element of the second vector, and if both elements are TRUE, the output TRUE is given.	v <- c(3,1,TRUE,2+3i) t <- c(4,1,FALSE,2+3i) print(v&t) It produces the following results - TRUE TRUE FALSE TRUE
\|	It is called element logic or operator. It combines each element of the first vector with the corresponding element of the second vector, and if the element is true, the output TRUE is given.	v <- c(3,0,TRUE,2+2i) t <- c(4,0,FALSE,2+3i) print(v\|t) It produces the following results - TRUE FALSE TRUE TRUE
!	It is called a logical non-operator. Each element of the vector is obtained and the opposite logical value is given.	v <- c(3,0,TRUE,2+2i) print(!v) It produces the following results - FALSE TRUE FALSE FALSE

Operator

Describe

Cases

It is called the element logic AND operator. It combines each element of the first vector with the corresponding element of the second vector, and if both elements are TRUE, the output TRUE is given.

v <- c(3,1,TRUE,2+3i)
t <- c(4,1,FALSE,2+3i)
print(v&t)

It produces the following results -

TRUE  TRUE FALSE  TRUE

It is called element logic or operator. It combines each element of the first vector with the corresponding element of the second vector, and if the element is true, the output TRUE is given.

v <- c(3,0,TRUE,2+2i)
t <- c(4,0,FALSE,2+3i)
print(v|t)

It produces the following results -

TRUE FALSE  TRUE  TRUE

It is called a logical non-operator. Each element of the vector is obtained and the opposite logical value is given.

v <- c(3,0,TRUE,2+2i)
print(!v)

It produces the following results -

FALSE  TRUE FALSE FALSE

The logical operators, and the || C onsider only the first element of the vector, giving the vector of a single element as the output.

Operator	Describe	Cases
&&	It is called a logical AND operator. Take the first element of both vectors, and only true is given when both are TRUE.	v <- c(3,0,TRUE,2+2i) t <- c(1,3,TRUE,2+3i) print(v&&t) It produces the following results - TRUE
\|\|	It is called a logical OR operator. Take the first element of the two vectors, and if one of them is TRUE, give TRUE.	v <- c(0,0,TRUE,2+2i) t <- c(0,3,TRUE,2+3i) print(v\|\|t) It produces the following results - FALSE

Operator

Describe

Cases

It is called a logical AND operator. Take the first element of both vectors, and only true is given when both are TRUE.

v <- c(3,0,TRUE,2+2i)
t <- c(1,3,TRUE,2+3i)
print(v&&t)

It produces the following results -

TRUE

It is called a logical OR operator. Take the first element of the two vectors, and if one of them is TRUE, give TRUE.

v <- c(0,0,TRUE,2+2i)
t <- c(0,3,TRUE,2+3i)
print(v||t)

It produces the following results -

FALSE

The assignment operator

These operators are used to assign values to vectors.

Operator	Describe	Cases
<− or = or <<−	It is called a left assignment	v1 <- c(3,1,TRUE,2+3i) v2 <<- c(3,1,TRUE,2+3i) v3 = c(3,1,TRUE,2+3i) print(v1) print(v2) print(v3) It produces the following results - 3+0i 1+0i 1+0i 2+3i 3+0i 1+0i 1+0i 2+3i 3+0i 1+0i 1+0i 2+3i
-> or ->>	It is called a right assignment	c(3,1,TRUE,2+3i) -> v1 c(3,1,TRUE,2+3i) ->> v2 print(v1) print(v2) It produces the following results - 3+0i 1+0i 1+0i 2+3i 3+0i 1+0i 1+0i 2+3i

Operator

Describe

Cases

<−

<<−

It is called a left assignment

v1 <- c(3,1,TRUE,2+3i)
v2 <<- c(3,1,TRUE,2+3i)
v3 = c(3,1,TRUE,2+3i)
print(v1)
print(v2)
print(v3)

It produces the following results -

3+0i 1+0i 1+0i 2+3i
3+0i 1+0i 1+0i 2+3i
3+0i 1+0i 1+0i 2+3i

->>

It is called a right assignment

c(3,1,TRUE,2+3i) -> v1
c(3,1,TRUE,2+3i) ->> v2 
print(v1)
print(v2)

It produces the following results -

3+0i 1+0i 1+0i 2+3i
3+0i 1+0i 1+0i 2+3i

Other operators

These operators are used for specific purposes, not for general mathematical or logical calculations.

Operator	Describe	Cases
:	The colon operator. It creates a series of numbers for the vectors in order.	v <- 2:8 print(v) It produces the following results - 2 3 4 5 6 7 8
%in%	This operator is used to identify whether an element belongs to a vector.	v1 <- 8 v2 <- 12 t <- 1:10 print(v1 %in% t) print(v2 %in% t) It produces the following results - TRUE FALSE
%*%	This operator is used to multiply the matrix by its transplication.	M = matrix( c(2,6,5,1,10,4), nrow = 2,ncol = 3,byrow = TRUE) t = M %*% t(M) print(t) It produces the following results - [,1] [,2] [1,] 65 82 [2,] 82 117

Operator

Describe

Cases

The colon operator. It creates a series of numbers for the vectors in order.

v <- 2:8
print(v)

It produces the following results -

2 3 4 5 6 7 8

%in%

This operator is used to identify whether an element belongs to a vector.

v1 <- 8
v2 <- 12
t <- 1:10
print(v1 %in% t) 
print(v2 %in% t)

It produces the following results -

TRUE
FALSE

%*%

This operator is used to multiply the matrix by its transplication.

M = matrix( c(2,6,5,1,10,4), nrow = 2,ncol = 3,byrow = TRUE)
t = M %*% t(M)
print(t)

It produces the following results -

      [,1] [,2]
[1,]   65   82
[2,]   82  117

R language operator

Table of contents

The type of operator

Arithmetic operator

The relationship operator

The logical operator

The assignment operator

Other operators

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