14 Feb R Vectors
A Vector in the R programming language are items of the same datatype. In this lesson, we will learn how to create a Vector and work on some Vector operations:
- Create a Vector
- Access Vector Items
- Vector Length
- Sort Vector Items
- Add Vectors
- Subtract Vectors
- Multiply Vectors
Create a Vector
The c() method is used to create a Vector in R. The Vector items are separated by comma. Let us see the examples to create a Vector with:
- Numerical Values
- Numerical Values in Sequence
- String values
- Boolean values
Let us create a Vector, beginning with numerical values.
Create a Vector with numerical values
Use the c() function to create a vector of numerical values in the R programming language:
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# Vector of numerical values myVector <- c(10, 20, 30, 40, 50) # Display the Vector myVector |
Output
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[1] 10 20 30 40 50 |
Create a Vector with numerical values in a sequence
The : operator is used in R to create a vector with numerical values in sequence:
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# Vector of numerical values in a sequence # The : operator is used below myVector <- 40:50 # Display the Vector myVector |
Output
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[1] 40 41 42 43 44 45 46 47 48 49 50 |
Create a Vector with string values
We will use the c() function to create a vector with string values:
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# Vector of string values myVector <- c("amit", "rohit", "virat", "tom", "john") # Display the Vector myVector |
Output
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[1] "amit" "rohit" "virat" "tom" "john" |
Create a Vector with boolean values
We will use the c() function to create a vector with boolean values. The boolean includes only TRUE and FALSE values:
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# Vector of boolean values myVector <- c(FALSE, TRUE, FALSE, FALSE, TRUE) # Display the Vector myVector |
Output
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[1] FALSE TRUE FALSE FALSE TRUE |
Access Vector Items
Use the [] brackets to access vector items i.e., elements of an R vector. Just set the position number of the element you want to fetch. Follow the below syntax:
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# Vector of string values myVector <- c("amit", "rohit", "virat", "tom", "john") # Display the Vector myVector # Access Vector items # Set the position of the item you want to access inside the [] brackets # Access the 3rd item myVector[3] |
Output
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[1] "amit" "rohit" "virat" "tom" "john" [1] "virat" |
In the above example, we have accessed the 3rd item since we have set position 3.
Vector Length
The length() function is used in the R programming language to get the vector length. Let us see an example:
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# Vector of string values myVector <- c("amit", "rohit", "virat", "tom", "john") # Display the Vector myVector # Get the length of the Vector length(myVector) |
Output
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[1] "amit" "rohit" "virat" "tom" "john" [1] 5 |
Sort Vector Items
The sort() function is used in the R programming language to sort the vector items. Let us see an example:
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# Vector of string values myVector <- c( "rohit", "virat", "amit", "tom", "john") # Display the Vector myVector # Sort the vector items sort(myVector) |
Output
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[1] "rohit" "virat" "amit" "tom" "john" [1] "amit" "john" "rohit" "tom" "virat" |
Add Vectors
In the below example, we will add two vectors in the R programming language:
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# Vector1 myVector1 <- c(10, 20, 30, 40, 50) # Vector2 myVector2 <- c(5, 15, 25, 35, 45) # Display the Vectors print("Vector1:") myVector1 print("Vector2:") myVector2 # Add Vectors print("Sum of Vectors:") result <- myVector1 + myVector2 # Display the result after adding two vectors Result |
Output
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[1] "Vector1:" [1] 10 20 30 40 50 [1] "Vector2:" [1] 5 15 25 35 45 [1] "Sum of Vectors:" [1] 15 35 55 75 95 |
Subtract Vectors
In the below example, we will subtract two vectors in the R programming language:
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# Vector1 myVector1 <- c(10, 20, 30, 40, 50) # Vector2 myVector2 <- c(5, 15, 25, 35, 45) # Display the Vectors print("Vector1:") myVector1 print("Vector2:") myVector2 # Subtract Vectors print("Result of Subtracting Vectors:") result <- myVector1 - myVector2 # Display the result after subtracting two vectors result |
Output
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[1] "Vector1:" [1] 10 20 30 40 50 [1] "Vector2:" [1] 5 15 25 35 45 [1] "Result of Subtracting Vectors:" [1] 5 5 5 5 5 |
Multiply Vectors
In the below example, we will multiply vectors in the R programming language:
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# Vector1 myVector1 <- c(10, 20, 30, 40, 50) # Vector2 myVector2 <- c(5, 15, 25, 35, 45) # Display the Vectors print("Vector1:") myVector1 print("Vector2:") myVector2 # Multiply Vectors print("Result of multiplying Vectors:") result <- myVector1 * myVector2 # Display the result after multiplying two vectors Result |
Output
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[1] "Vector1:" [1] 10 20 30 40 50 [1] "Vector2:" [1] 5 15 25 35 45 [1] "Result of multiplying Vectors:" [1] 50 300 750 1400 2250 |
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