Tutorial # 3. Vector & Element Access

 What Is Vector?

A Vectors is a collection of similar types of object or Data Type. In most of the programming language indexing start from 0 but in R it start from 1.

'c' has important role, it check for the data type as they have priority sequence
Logical > Integer > Double > Characters

 

x = c(5,9,6,7,2,3,4,5)

print(x)

# Access a particular element

print(x[1])

# Access a range of elements

print(x[1:4])

# Access a range of elements with EXCLUDING the elements

print(x[c(-1:-4)])

# Accessing the elements with boolean values

print(x[c(FALSE , TRUE , FALSE , TRUE , FALSE , TRUE ,FALSE , TRUE)])

 

 

Example 1:   

 

# Creates a Vector 

vehicles = c('Car', 'Bike','Bus', 'Truck')

 

# Prints a vector 

print(vehicles)

# Creates a Vector 

numb = c(TRUE,1.6,2.2,5)

 

# Prints a vector 

print(numb)

Example 2: Creating a consecutive vectors "Starting Number : Ending Number"

x = 1:10

print(x)

y = 5:-5

print(y)

Example 3: Creating a vectors using " seq()" function

Syntax : seq( from , to , by , length.out )
from -  beginning of sequence

to - ending of sequence

by - increment by ( default is 1)

length.out -  divide the length of the sequence in equal part

 

x = seq (5,10)

y = seq (from = 0, to =10 , by = 2 )

z = seq (from = 0, to =10 , length.out =7)

print((x))

print(y)

print(z)

 

You may also interested in:

An Introduction to language R

Tutorial # 1.Data Type & Variable  Declaration
Tutorial # 2.Operators
Tutorial # 3.Vector  & Element Access
Tutorial # 4.Matrix
Tutorial # 5.Data Frame

Tutorial # 6.Arrays
Tutorial # 7.Lists
Tutorial # 8.Factors
Tutorial # 9.Data import
Tutorial # 10.Machine Learning
Tutorial # 11.Visualization